ETH on Ethereum and Base. You pick the network in the form.
Choose what to receive, enter the amount and your address. Then send ETH to the deposit address, and the coins arrive at your address.
The one chosen in the form: Ethereum and Base. ETH on another network is a different coin.
The rate floats. The amount you receive can change until your deposit is credited.
The exchange is run by an executing partner. The rate is recomputed when the exchange is created.