That seems strange to me, I usually buy a guitar for all its good qualities, if i dont like the finish then i dont buy it, if im spending my hard earned cash on something, it has to be good to me.
That said im a big fan of charvels and if its a very good player, for that price you should perhaps go for it, but if your dead set on refinishing it, try and get the price down from the seller based on the fact the finish isnt perfect
~~ TS ~~