My question, which I realize was unclear, was meant to be "Can I successfully raise funds for this through crowdsourcing?" (and selling old doujin and art books and whatever, which I want to do anyway)

I know moving overseas is going to be expensive as fuck. If I ever manage to earn money again, I'm going to put a fraction of my paycheck into savings for that. If I don't, well, the principal on our house is under 90k right now, and houses in our neighborhood are selling for 250k+, which would leave us a sizable chunk to play with (pay off moving expenses, etc), especially in another 5-8 years, when we'll get the principal down to 60k or less (I don't have the exact breakdown of principal/interest in our monthly payment right here). And Ben has apparently a lot of money in investments (see below).

(Actually, Ben's parents would pay for the whole summer/Xmas trip to Berlin. Them paying for things like that used to make me uncomfortable, but I've gotten used to it. Also, they have a lot of money apparently.)

I sent email to my teacher asking for advice. I don't know when he'll get back to me; he's usually pretty busy.