They sell crickets for 60% over the price of reptiles in the Phoenix area (they know they have a monopoly in the area and take advantage of their location).
Their clerks then count them 3 times because, God forbid, they gave you an extra cricket on your order of 4 dozen (they pay about $14 for a box of 5,000).
Now, they don't have crickets at times.
Hurry up parents and buy your kids those reptiles from Petco's breeding farms.