FORDLUVER88

I have a Yamaha Blaster i have been trying to trade for a Honda atv.This guy has a 2001 Honda 250EX that he wants to trade me.The only problem is he said that the weld broke on the rear hub .He wants to trade me but i have to fix the hub.I don't know alot about fixing 4-wheelers.Is this a serious thing that is wrong with it?Is it easy to fix?Was the hub welded when new? I don't know if i should trade or not? Any help appreciated!! Thanks!