I think you will find that these are not Watanabe rims, but Black Racing, unless Im mistaken. and the offset on these is definitely suited more to FWD rollas, MR2's or S13's etc, not AE86.
I saw a set EXACTLY like these go for $75 for a set of 4 last week, which was drastically underpriced, I would expect them to go for somewhere in between, depending on if the person buying them knows what the hell they are doing.