they are the "non-reinforced" earlier version. 13.8 lbs... if one is cracked you can likely repair it, i don't know if I would recommend it tho. if you get them, post up a pic of the back of them as I am curious to see if they're really the non-reinforced version.
Personally, sounds like he will let them go for a song, you may have to pick up another one to replace the one that doesn't hold air, but I may have a source for you.. lemme know how it goes.