Yes - You need a Solana wallet with a USDC token account to:

• Buyers: Already set up automatically when you receive USDC
• Sellers: Must have an initialized USDC account before creating listings

How to get a USDC account:

1. Use Phantom Wallet (USDC accounts created automatically)
2. Or send yourself a tiny amount of USDC from an exchange (initializes account)
3. Or use Sollet.io to manually create token accounts