It's also becuase we're used to seeing aniline dyed leather, not crust leather. If you check out the leather St Crispin uses it has a similar look to it.
Also, the glossyness is just part of the way the Italians finish their shoes; it's seen as good customer service. It comes off in a few wearings so it's not a big deal if you don't like it.
I hate it when it flakes off though.
Santoni does this - and it looks great initially, but wears/flakes off easily.
And yes - the bin was a stellar price to begin with. But since they were on the large side for me and since I'm trying really hard not to buy any shoes for a while I decided to low ball bid just to see if I got lucky. You got a seriously good buy there. I hope they give you toe nail rot!