Hello :) I work at a jack's aquarium in Ohio and have bearded dragons myself. It's true you can buy crickets pretty cheap from a pet store (around 13 cents each). They are also even cheaper from a bait shop. You dont want to give your bearded dragons wax worms ALL THE TIME, wax worms are like candy to them and they are filled with fat, but they make a good treat. Baby beardies will do great on small to medium crickets and small mealworms, you also want to give them leafy greens (collard greens, etc) When the bearded dragon is getting towards adult size you can give them super worms and large crickets (continue giving greens), some people even give their bearded dragons pinkie mice when they are big enough. It is very easy to keep crickets as well, just get a rubber-made container, put holes in it, add some egg carton, cricket drink, and food and just put all your crickets in there! :) Feed the bearded dragon 2 to 3 times a day, and give them as much as they will eat.
Works at a pet store and owns bearded dragons