How much does Coinbase Exchange charge to convert USDC to USD?

Coinbase Exchange will assess a fee on USDC to USD net conversions in excess of $60 million per rolling 30-day period. USDC to USD Conversion Fee Table

What is the difference between Coinbase and Coinbase pro?

Coinbase operates two different platforms, in fact: Coinbase and Coinbase Pro, and each of them and there are some differences in how they charge users for their services. Coinbase does not charge fees for account setup, maintenance, annual and termination fees.

Does Coinbase guarantee price pegs?

Coinbase does not guarantee price pegs and such pegs may fluctuate for reasons that include, but are not limited to, market conditions. When you place an order for Stablepairs, the maker will pay a fee of 0.00% and the taker will pay a fee as outlined in the Stablepair fee table below.