the home depot has em.... well one on the island carries the big pack that is gel glue and the other home depot on the island has the regular glue thats not gel in the big pack i guess it depends on which one you go to...
Believe it or not.I get mine from the dollar tree discount store.3 small tubes for a buck!5 bucks and I have 15 tubes.It works just as good.I've used loctite-good doesn't go far.Tony's stuff- tip gets all clogged and nasty.
Thats my .02