x2 on being in good condition
also depends on what plans you have for it - a set of new 33s are about $1k. rims are anywhere from $200 to $1000 and add 20% if it has the matching spare. installed lift another $400 at least + labour. winch and mount another $300 (at least if you get one that is used) - so if he plans to do all this anyway i'm thinking is not a bad start, but if these add-ons are not in good condition then could be worth getting one that is stock and buying these after, you still need to do the work and running around for them. The Jeeps are priced well here in BC, Canada even YJs so i could be influenced by that - checking the local listings is probably best. Seen some great deals on Jeeps in US, but you never know what you're getting hence the advantage of knowing the guy who's selling (trading) it - so i assume if it's a friend he will tell you if there are any issue with the vehicle (where you could get a lemon otherwise).