<human>: Just bought a [Lee Ralph Vision Skateboard] from a friend for $150. I've seen the same skateboard down at prices like 50$ USD. The problem is, I'm not sure he realised I could get it much cheaper than what he sold to me, I really am in a strange position as I originally purchased it to sell to my other friend for the same price, but now that I know that I got ripped off, I don't know what to do and I wouldn't do that to another friend.

I am really confused and not sure, I'm a student (which really shouldn't be spending his money like this I know, I learned my lesson). What could I do in this position? I want my money back, but I don't want to be a dick and damage ties with my friend I bought the board of either, he's a nice guy and I honestly believe that he didn't know that he was ripping me off.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Got ripped off by a friend by accident. Meant to sell it for the same price to another friend. I want my money back.