It depends
If it's a quick built kit, take a close look at all the high dollar items like the spar and make sure they aren't screwed up. If the alum has the blue wrap still on it, look carefully for corrosion. If it's scattered smothered and covered, do a close inventory. Don't let the low price cloud your vision. One thing to consider, no matter what the price, make sure you are game for a RV6 build over the next couple of years. It's a very good airplane but maybe not quite as fast to build as the other models.