Four coins, and the only usable Ethereum door.
Anubis takes four coins, the widest spread on any Tor market, and each has a job.
Monero is the privacy default, the coin to use when you do not want the payment legible on a public ledger. Bitcoin covers vendors who have not switched. Litecoin handles small orders where Bitcoin fees would be out of proportion. Ethereum covers the specific case where that is what you hold and converting first is friction you would rather skip.
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 circles back to Monero. Deposit addresses are issued fresh per order across all four coins.
Almost every market of this kind takes two. Anubis takes four, which turns the payment step from something you accept into something you choose. The useful way to frame the choice is not speed or fee, it is whether the payment leaves a permanent public record.
Monero produces no public record: ring signatures blend the spend with decoys, stealth addresses mean the chain never shows the real recipient, and the amount is concealed. Bitcoin, Litecoin and Ethereum all write the amount and both addresses to a ledger anybody can read for as long as the chain exists.
It confirms fastest of the four, which reads as an advantage and hides the cost. The account model means one address carries every transaction it has ever made, so reuse is the default rather than a mistake. An address that once received an exchange withdrawal carries that association into everything afterwards. Use one that has done nothing else, and understand it is still permanently readable.
Confirms in a couple of minutes with low predictable fees, which matters on a small order where a Bitcoin fee during a busy period takes a visible bite. It records exactly as much as Bitcoin does, so it buys speed rather than privacy, and people pick it believing otherwise.
Move the coin through a wallet you control before it reaches an order. Sending straight from wherever you bought it draws a line from an identity checked account to a marketplace, and no amount of protocol privacy undoes a line you drew yourself.