Ill put it this way, Beardies are awsome and cute, but not cheap. I was paying $25 every two weeks for 1000 crickets, and beardies eat ALOT especially once you see how many they eat in one go, and then know that you have to do that three times a day. Granted 80% of people under feed their beardies...
Just remember, its how many crickets a healthy beadrie can eat in 15 minutes three times a day. Unless you breed your own feeders id expect around $50 a month on crickets and vegies, and around $25 once they are grown and eat mostly Vegs.
Also take into hand that alot of the crickets you buy WILL die or out grow the size/length your beardie can take ( Which is the width from eye to eye on your dragons head) So if you have 1000 crickets you surely will not be feeding all 1000 to it.
Hope this helps- Matt