![Brock's Onix [1st Edition] #21](https://product-images.tcgplayer.com/fit-in/400x558/83974.jpg)
Brock's Onix [1st Edition] #21 (Pokemon Gym Heroes)
Brock's Onix [1st Edition] #21 from Pokemon Gym Heroes is worth about $15.42 raw (Near Mint) and $285 in PSA 10 as of Aug 24, 2026. Trade-in offers typically run $9–$13 raw.
Raw Trade-In Value by Condition
| Condition | Market | Cash Offer Range |
|---|---|---|
| Near Mint | $15.42 | $9 – $13 |
| Lightly Played | $12.34 | $7 – $10 |
| Moderately Played | $9.25 | $6 – $8 |
| Heavily Played | $6.17 | $4 – $5 |
| Damaged | $3.85 | $2 – $3 |
Your card’s condition directly affects its trade-in value. Most cards from binders are Lightly Played or better. Estimates based on standard condition discounts.
Graded Prices
| Grade | Price | Cash Offer Range |
|---|---|---|
| PSA 10 | $285 | $171 – $242 |
| PSA 9.5 | $67 | $40 – $57 |
| PSA 9 | $61 | $37 – $52 |
| PSA 8 | $26 | $16 – $22 |
| PSA 7 | $24 | $14 – $20 |
| BGS 10 | $371 | $223 – $315 |
| CGC 10 | $59 | $35 – $50 |
| SGC 10 | $171 | $103 – $145 |
Prices from PriceCharting & JustTCG · Updated Aug 24, 2026
How to Sell: Compare Your Options
| Route | Gross | Fees | Shipping | You Keep | Time |
|---|---|---|---|---|---|
| Sell to a Local Buyer | $9–$13 | $0 | $0 | $9–$13 | Same day |
| Sell on eBay | $15.42 | −$2.04 | −$5.00 | $8.38 | 2–4 wks |
| Sell on TCGplayer | $14.65 | −$1.60 | −$4.00 | $9.05 | 2–3 wks |
Local buyers found on Trade Into Cash typically pay 60–85% of market value with no fees. eBay: 13.25% final value fee. TCGplayer: 10.89% seller fee. Shipping estimated for standard tracked.
Should You Grade This Card?
Grading costs ~$25 + ~$18 shipping. Based on typical English card PSA submission results.
| Grade | Odds | Card Value | You Keep (Net) |
|---|---|---|---|
| PSA 10 | 15% | $285 | $204 |
| PSA 9 | 35% | $61 | $5 |
| PSA 8 | 30% | $26 | $-25 |
| Below 8 | 20% | $15 | $-35 |
"You Keep" = card value minus grading ($25), shipping (~$18), and eBay fees (13.25%) if you sell the graded card online. Compared against selling raw to a local buyer at ~72.5% of market (midpoint of 60–85%).
Sell This Card Locally
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The Brock's Onix [1st Edition] #21 (Pokemon Gym Heroes) currently trades at $15.42 raw. Find a local buyer on Trade Into Cash for same-day cash.