Went through the exact same thing with my dad last summer when he told me to just buy tickets at the machine instead of online for our Florence trip. I rolled my eyes so hard I almost lost them, then the machine price was like 12 euros less per ticket than what I paid on some booking site. Now I just stand there in silence while he explains things I used to make fun of him for. The part that really gets me is the booking fee on top of the marked up price, like we are paying extra for the privilege of giving them our money early. So yeah, enjoy your crow, it tastes better with a side of humble pie. Your uncle is never going to let you forget this one either, trust me.