Usually yes, if you value maximum cash. EB Games / GameStop offers **convenience at a steep discount**.
| Game | EB Credit | EB Cash | eBay Sold (Avg) |
|---|---|---|---|
| Pokémon HeartGold (CIB) | $45 | $30 | $120+ |
| Mario Kart DS (Cart only) | $8 | $5 | $25 |
| New Super Mario Bros. (Cart) | $6 | $4 | $18 |
Verdict: Not a "scam" — they're a business — but you **leave money on the table**. Compare offers.