The problem with kits like that is they do not work. I have had a few people over the years who have brought their car in after attempting to repair a break with one of those kits and tried to get me to try and repair it again. I tell them that in most cases there is nothing that can be done. I always tell them that they are throwing their money away when they purchase kits like that.
I agree with CV..what a pile of crap that those quicky fixit kits are but they may get us some respect when they find out just how superior a repair that we can do compared to those kits.