at the end of the day, the guy should of checked the bike over properly, if he knew it had been in some kind of slide, he should of ued his mind and checked the bike more thoroughly, thats like me going to buy a cossie and knowing its been in a crash and not checking the damage. for all we know the guy may of come off the bike and caused more damage, and is trying to pull the wool over your eyes to ge his cash back...truthfully mate its down to the buyer not the seller...