I buy in bulk if they are less than 18 months old. At that stage they are eating over a dozen a day, hell in their prime they might down 3 dozen a day if the are around 250-300grams. Once they are an adult mine dont each much more than a dozen a week per cham.
I just get the pets store ones after that if they are not banded crickets. Banded might work for an adult jacksons, but its barely a snack for a veiled/panther. Believe it or not, but supers have less chitin/shell than crickets.
I got a beardy and a oust chameleon right now. They get dubias and silk worms for 2 months in the summer, and dubias and supers in the winter. They might get a snack from time to time if i see one at a show.