Whew, that does sound like an unreasonably large hit, the Hive Engine fees themselves are extremely reasonable. I'm sure there's a leak in the process there somewhere that can be plugged. As I look now though, your wallet is showing 51 LEO with a current value of $13.43. I don’t know if LEO has legit doubled in the past couple days or maybe you were just seeing a strange anomaly in the price feed at the time of purchase that looked like a big loss. I’ve never used the LEO DEX myself (which it looks like you may have gone through), just the Hive Engine market interface.

Now that you’re set up with HiveSigner, you may want to look into the Hive Keychain browser extension as well. I have both, but generally find Keychain to be more user friendly and widely used across various Hive sites & Apps. Desktop only for now, but there is a mobile version in the works.