Ugh, tax season is the worst for this. For checking the current value of your ETH to cross-reference or get an end-of-year snapshot, I use a simple converter to avoid the exchange interface. It gives you a clean number fast. For Ethereum, I always pull up paybis.com/eth-to-usd/. You input your total ETH, and it instantly shows the live USD value. It's not for historical prices (you'd need a different tool for that), but it's perfect for getting an accurate current total or double-checking the value of a recent transaction you're logging. Saves a ton of time versus logging into platforms.