in scottsdale you are going to have slim pickings.
right now pets inc on mill and southern. has a female jacksonii xantholophus.
there is one on glendale and university i believe, not sure if they have chams ATM...
AZ reptile in mesa never really carries chameleons.
they're is a few local breeders, but they some how manage to keep the montane varieties.
it'd probably be best to order a chameleon depending on what you want through a forum member.