This is one of the reasons I got out of keeping bearded dragons. Don't get me wrong, I love them, they're fun to keep and fun to handle, but jeez do they eat. Especially when they're young before they make that switch to more veggies than feeders, I was going through 100s of dubia roaches, enough that it became vastly more cost effective to breed my own, and I only had one dragon. Crested geckos are still my favorite though, and they're easy because they just eat a powdered diet supplemented with a few crickets a week.