Sorry, when I said "One purchase isn't really going to impact the way they stock their cages," I didn't mean to suggest that collective action wasn't important or that we should use that fact as a way to justify shopping at Petco. I meant it in the context of the OP talking about returning his...
I'm pretty sure nobody told you to return the animal.
This isn't strictly true, Petco expects to take a loss on live animals. They offer them to sell supplies and to encourage multi-pet families to choose Petco as the place to buy their dog/cat food and supplies.
Not that you should buy...
They sell small superworms at petsmart that would be appropriate. They do not sell roaches, you'll need to find a reptile specialty store or order online if you want to go in that direction.
This is Yoshi, an ambilobe from Kammerflage Kreation's breeder Boliaka-Vahiny. :D. I posted him on reddit.com/r/pics a few days ago, so.... he is kinda internet famous. Here is the imgur link... http://imgur.com/6rxO5Jl