Payment and coins

Four coins, each with a job. Monero for privacy, the default when you actually care about the payment being unreadable afterward. Bitcoin for the vendors who have not switched. Litecoin for small orders where Bitcoin fees would be out of proportion to the purchase. Ethereum for the specific case where that is what you are holding and moving it into something else first is friction you would rather skip.

Being able to pay in Ethereum is genuinely rare on Tor. It is worth knowing the trade: Ethereum's chain is as public as Bitcoin's, so paying in it buys convenience, not privacy. If the reason you are here is to keep the payment private, the answer is still Monero, and the extra coins are there for the orders where privacy is not the constraint.

Deposit addresses generate fresh per order across all four coins. The multisig escrow behind them does not care which coin funded it.