So I just read the Cat of Bubastes and realized these are books my son would LOVE (Particularly if there are any that are about pirates? He loves Treasure Island and has been looking for something like it).
I've got several of these on Kindle I've picked up BUT--He reads more books in hardcopy than on Kindle so to give the first book the best chance to be read, I'd like to get him a couple that he can throw in his backpack and take from place to place. I went to Half Price books and the only book they had was $15!!! What is a good source for these?