The coin you pick matters less than the chain you send it on. Sending the same fifty dollars of USDT can cost you a fraction of a cent or more than the subscription itself, depending on a dropdown most people do not read.
Why one asset has several prices
USDT is not one thing. It is a token issued separately on Tron, Ethereum, BNB Chain, Polygon, Solana and others, and each of those charges its own fee to move it. The token is worth a dollar on all of them. Getting it from your wallet to ours is what varies.
Tron settles in seconds and costs a fraction of a cent. Ethereum is measured in dollars and on a congested day the fee has exceeded the price of a monthly plan. Solana and Polygon sit near Tron. BNB Chain sits in between.
Where the picker helps
Any coin with more than one chain gets a network selector at checkout. It opens on the cheapest widely supported option rather than the first one alphabetically, because the default is what most people accept. Change it if your exchange only supports one chain, which is common.
The mistake that actually costs money
An address issued on one chain cannot receive funds sent on another. It is not a delay, and in most cases it is not recoverable. The deposit page names the network directly beside the address for that reason. If you have already sent on the wrong one, send us the transaction hash before doing anything else and we will tell you honestly whether anything can be done.
Withdrawal fees are separate
Your exchange charges its own fee to move coins out, and it is often larger than the network fee itself. Binance, Coinbase and the rest each set their own, and they differ per chain in ways that do not always track the real network cost. Check that figure before you assume Ethereum is the expensive option in your particular case.
What we pay
Our side of the transaction costs a flat two dollars, built into the price on the card. It does not change with the chain you choose. The fee you save by picking Tron over Ethereum is entirely yours.