Like Vespalands question. The whole deal would revolve around the price. If you can get them for a song and a dance then it would be a great buy if even just for the parts. If he wants 250 each and none of them run then you might want to (away from the deal). try to get a look at them in the daylight and peg him down on a price. If all of them have compression and most of their parts then you might could sell the parts off of one of the bikes to get the other two running or even trade some parts. If its cheap enough then the worst you could get was a good learning experience on how to get them running. Messing with them could make for a fun winters project. Nothing is more rewarding than tooling around town on something that you rebuilt yourself!!