ELASTIC GOODS TRADING GUIDE
Complete Item Database, Profit Calculation & Buy Low Sell High Strategies
Last updated: 2026-02-14
Complete guide to all 16 Elastic Goods items in Arknights: Endfield with profit calculation strategies, daily trading routines, and friend terminal optimization. Learn why percentage discounts don't equal profit and how to maximize Stock Bill income through smart trading.
* TL;DR - Key Points
- * 16 Elastic Goods total - 14 Valley IV items, 2 Wuling region items
- * Percentage ≠ Profit - High % discounts don't mean highest absolute profit
- * Buy thresholds: Skip (-5% to -20%), Buy (-30% to -40%), Must Buy (-50% to -75%)
- * Profit formula: Sell Price - Buy Price (not percentage)
- * Daily routine: 5-10 minutes checking prices, buy on deep discounts
- * Stock allocations stack for 2-3 days - skip bad days
- * High-value items win - Unity Syrup ($3,328 profit) beats high-% items
- * Friend trading essential - check 3-5 friend terminals daily
Contents
Complete Elastic Goods Item Database
All 16 Elastic Goods items across Valley IV and Wuling regions. Understanding base prices and categories helps identify the most profitable trading opportunities.
Valley IV Region (14 Items)
| Item Name | Category | Base Price | Priority |
|---|---|---|---|
| Unity Syrup pkg | Food Products | High | S-Tier |
| Hard Noggin Helmets pkg | Military Equipment | High | S-Tier |
| Originium Saplings pkg | Rare Materials | High | S-Tier |
| Aggeloi War Tins pkg | Military Supplies | High | A-Tier |
| Vigilant Pickaxes pkg | Mining Equipment | Medium | A-Tier |
| Eureka Anti-smog Tincture pkg | Medical Supplies | Medium | A-Tier |
| Valley Hydroculture Fillets pkg | Food Products | Medium | B-Tier |
| Ankhorilling Kitchenware pkg | Consumer Goods | Medium | B-Tier |
| Astarron Crystals pkg | Minerals | Medium | B-Tier |
| Seš'qamam Knucklebones pkg | Cultural Artifacts | Medium | B-Tier |
| Nymphsprout pkg | Botanical | Medium | C-Tier |
| Scrap Toy Blocks pkg | Consumer Goods | Low | C-Tier |
| Wuxia Movies pkg | Entertainment | Low | C-Tier |
| Musbeast Scrimshaw Dangles pkg | Artisan Goods | Low-Medium | C-Tier |
Wuling Region (2 Items)
| Item Name | Category | Base Price | Unlock |
|---|---|---|---|
| Witchcraft Mining Drill pkg | Industrial Equipment | Very High | Level 43+ |
| Wuling Frozen Pears pkg | Food Products | High | Level 43+ |
Unlock Requirements
Valley IV items unlock at Authority Level 14 after completing the "Restart Area Stock Distribution I" mission. Wuling items require reaching Authority Level 43 and accessing the Jingyu Valley region. Each terminal shows 3-5 random items daily from their regional pool.
Price Fluctuation Mechanics
Elastic Goods prices change daily based on server-side algorithms. Understanding these mechanics helps you identify optimal buy and sell windows.
Daily Reset
All prices refresh at 04:00 UTC+8 alongside daily missions. Check prices after reset for new opportunities.
Price Range
Items fluctuate from -75% (deep discount) to +400%+ (premium prices).
Allocation Stacking
Unspent purchase limits accumulate for 2-3 days. Skip bad days without penalty.
Reading Price Indicators
| Indicator | Color | Meaning | Action |
|---|---|---|---|
| Downward Arrow | Red | Price below baseline | BUY |
| Upward Arrow | Green | Price above baseline | SELL |
Pro Tip: Allocation Stacking
You don't need to buy every day. If today's discounts are mediocre (-10% to -20%), skip the purchase and let your allocations stack. Wait for a day with -40% or deeper discounts, then buy using your stacked allocations. This patience significantly increases overall profit margins.
Profit Calculation Strategy
This is the most critical concept for successful trading. Most players fail because they chase high percentages instead of calculating actual profit.
⚠️ The Percentage Trap
A 400% discount sounds amazing, but the absolute profit matters more. Here's proof from actual community data:
Real Trading Examples
| Item | Buy Price | Sell % | Sell Price | Profit |
|---|---|---|---|---|
| Scrap Toy Blocks | ~$800 | 434% | ~$4,339 | $3,539 |
| Hard Noggin Helmets | ~$1,200 | 302% | ~$4,824 | $3,624 ← BETTER |
| Unity Syrup | $1,538 | 216% | $4,866 | $3,328 |
Why High Base Price Items Win
Higher base price items yield more absolute profit even with lower percentage gains:
| Item | Base | Discount | Buy | Sell % | Sell | Profit |
|---|---|---|---|---|---|---|
| Toy Blocks | $1,000 | -40% | $600 | +300% | $4,000 | $3,400 |
| Unity Syrup | $2,000 | -25% | $1,500 | +200% | $6,000 | $4,500 ↑ |
| Witchcraft Drill | $3,000 | -20% | $2,400 | +150% | $7,500 | $5,100 ↑ |
Profit Calculation Formula
Profit per Unit = Sell Price - Buy Price - 1. Check the item's Total Cost (buy price)
- 2. Use "Friend's Price" to check sell prices
- 3. Calculate: Friend's Sell Price - Your Buy Price
- 4. Multiply by daily purchase limit for total profit
Buying Strategy by Discount Tier
Not all discounts are worth buying. Use these evidence-based thresholds to maximize your trading efficiency.
❌ Skip Tier (-5% to -20%)
Action: Do not buy. Margins too thin for meaningful profit. Better to wait for deeper discounts. Save Stock Bills for better opportunities.
⚠️ Buy Tier (-30% to -40%)
Action: Buy selectively. Decent profit potential. Prioritize high base price items (S-Tier and A-Tier from our list). Good for maintaining trading habit.
✅ Must Buy Tier (-50% to -75%)
Action: Buy maximum quantity immediately. Exceptional profit windows. Often yield 3,000-5,000+ profit per unit. Priority: High base price items first.
Regional Progression Strategy
Early Game (Level 14-43): Focus on Valley IV items only. Master the 14 Valley goods and establish your friend trading network.
Late Game (Level 43+): Unlock Wuling items (Witchcraft Mining Drill and Wuling Frozen Pears). Higher base prices = greater profit potential, but require Wuling Stock Bills.
Daily Trading Routine
An optimized routine takes 5-10 minutes and maximizes profit while minimizing effort. Consistency beats intensity.
Morning Routine (After Daily Reset)
Step 1: Check Your Terminal (2 min)
Open Stock Redistribution, scan Elastic Goods, note items with -30%+ discounts
Step 2: Calculate Profit (3 min)
Check "Friend's Price" for 3-5 friends. Calculate: Sell Price - Buy Price = Profit
Step 3: Execute (1 min)
Buy max quantity of highest-profit items. Leave Stock Bill reserve.
When to Sell
- * Item shows +100% or higher at your terminal
- * Friend's terminal shows exceptionally high price
- * You need Stock Bills for urgent upgrades/purchases
- * Price has peaked (tracked over 2-3 days)
Weekly Review (Optional)
Review which items consistently yield best profits. Adjust friend list based on trading activity. Plan terminal upgrades based on volume. Calculate weekly profit to track progress.
Friend Terminal Optimization
Friend trading is the difference between average (30k/day) and exceptional profits (80k+/day). Build your network strategically.
Network Size
Minimum: 5-10 friends
Optimal: 15-20 friends across time zones
How to Add Friends
Accept co-op requests, join community Discord, post on r/ArknightsEndfield, check visitor logs
Time-Efficient Friend Check
- 1. Check your 3 most reliable friends first
- 2. If no good prices, expand to next 3-5
- 3. Keep mental notes on historically good prices
- 4. Don't waste time checking 20+ friends daily
Visitor Sales Log Benefits
When friends sell at your terminal, you earn passive Stock Bill credits with zero effort. This encourages reciprocal trading. Add a note in your profile welcoming visitors - it encourages people to check your prices regularly.
Common Mistakes & How to Avoid Them
1. Chasing High Percentages Instead of High Profit
Mistake: Buying items with 400%+ discounts without calculating actual profit.
Fix: Always calculate Sell Price - Buy Price. High base price items with moderate % often win.
2. Buying Every Day Regardless of Prices
Mistake: Compulsive buying on mediocre -10% to -20% discounts.
Fix: Wait for -30% or deeper. Use allocation stacking to skip bad days.
3. Not Checking Friend Prices Before Buying
Mistake: Buying without confirming sell price availability.
Fix: Always check 2-3 friends' prices before purchasing. No sell opportunity = no profit.
4. Selling Too Early
Mistake: Panic-selling at +50% when item could spike to +200%.
Fix: Items never expire. Hold until you find exceptional sell prices.
5. Ignoring High-Value Items
Mistake: Always buying cheapest items because "you can buy more."
Fix: Unity Syrup, Witchcraft Drill, and Originium Saplings often yield better absolute profit.
6. Small Friend List
Mistake: Trading solo with only 2-3 friends.
Fix: Expand to 10+ active friends. More options = better sell prices.
7. Not Stacking Allocations
Mistake: Buying daily just because allocations refresh.
Fix: Skip bad days and stack allocations. Buy heavily on deep discount days.
8. Neglecting Terminal Upgrades
Mistake: Staying at Level 2 (30 daily limit) forever.
Fix: Upgrade to Level 3 (45 items) and Level 4 (60 items). Higher volume = higher daily profit cap.
Item Prioritization Matrix
Prioritize your purchases based on historical profit data and community feedback.
S-Tier (Always Buy on Deep Discounts)
- * Unity Syrup pkg - Highest profit potential (~$3,300)
- * Witchcraft Mining Drill pkg - Highest base price (~$5,100 profit)
- * Originium Saplings pkg - Rare materials premium
- * Hard Noggin Helmets pkg - Military equipment demand
A-Tier (Buy on -30%+ Discounts)
- * Aggeloi War Tins pkg, Wuling Frozen Pears pkg
- * Vigilant Pickaxes pkg, Eureka Anti-smog Tincture pkg
B-Tier (Buy Only on -50%+ Discounts)
- * Valley Hydroculture Fillets, Ankhorilling Kitchenware
- * Astarron Crystals, Seš'qamam Knucklebones
C-Tier (Low Priority)
- * Scrap Toy Blocks pkg - High % but low profit
- * Wuxia Movies, Musbeast Scrimshaw Dangles, Nymphsprout
Cross-System Synergy
Outpost Orders: Factory-produced goods complement trading income.
Environmental Monitoring: 50k+ Stock Bill injections fund trading operations.
Depot Deliveries: Transport jobs provide steady bill flow for trading capital.
Quick Reference Checklist
Frequently Asked Questions
What are all the Elastic Goods items in Arknights: Endfield?
There are 16 total Elastic Goods: 14 in Valley IV (Astarron Crystals, Ankhorilling Kitchenware, Aggeloi War Tins, Eureka Anti-smog Tincture, Hard Noggin Helmets, Musbeast Scrimshaw Dangles, Nymphsprout, Originium Saplings, Seš'qamam Knucklebones, Scrap Toy Blocks, Unity Syrup, Vigilant Pickaxes, Valley Hydroculture Fillets, Wuxia Movies) and 2 in Wuling (Wuling Frozen Pears, Witchcraft Mining Drill).
How do you calculate profit for Elastic Goods trading?
Calculate actual profit using the formula: Profit = Sell Price - Buy Price. Do not chase high percentages. For example, an item with 300% increase might yield $3,000 profit, while an item with 200% increase but higher base price could yield $4,000+ profit. Always check the absolute profit numbers, not just the percentage.
Should I buy Elastic Goods every day?
No. Stock allocations stack for 2-3 days, so you can skip days with poor discounts (-5% to -20%). Wait for -30% or deeper discounts before buying. A single purchase at -50% beats five purchases at -10%. Patience significantly increases your profit margins.
Which Elastic Goods are most profitable?
High base price items generally yield the best absolute profit: Unity Syrup (~$3,300 profit), Witchcraft Mining Drill (~$5,100 profit at optimal prices), Originium Saplings, and Hard Noggin Helmets. Avoid low base price items like Scrap Toy Blocks despite their high percentage discounts - they often yield lower absolute profit.
How do friend terminals work for selling Elastic Goods?
Each player receives independent daily prices. Buy cheap items at your terminal, then visit friends' terminals to sell at their prices if they're higher. Both you and your friend benefit - you get profit, they get Visitor Sales Log credits. Check 3-5 friends daily for best sell prices. Building a large friend network is essential for maximizing profits.