Thanks for all your answers! Very kind of you. I'll look at all the links and options you shared.
According to their illusive support documentation, it's possible to choose different fees at the time of transaction. If it was offered I didn't notice. I'm certainly not going to test it and hit the confirm button again to "double-check" lol ... If I was writing that software (the wallet) I would definitely, definitely check something like that first and proactively check with the user "The transaction fees are high compared to the amount you are transfering, are you sure you wish to continue?"