While I haven't used beardie chowmyself, something to keep in mind is that digestion requires more water than any other biological process, and beardies don't take a lot of water in. Beardie chow is very dry. Over a lifetime, I would think relying on beardie chow could have a detrimental effect on the animal's kidneys; hence, I don't use it.
The food list on beautifuldragon.org is fantastic. The key to remember is that baby beardies eat 80% insects/20% veggies. Give them too much more in vegetables as babies and they don't have enough protein to grow. They also get diarrhea (you don't want to see THAT). As they mature, dragons GRADUALLY start eating more veggies and fewer bugs until, at full adulthood, they eat 80% veggies/20% bugs (yep, the exact opposite).
So, the bad news for your wallet is that you need a bunch of bugs and will continue to need them for a year or more. Good news is you CAN breed tropical roaches. Here are a few options for heating:
1. Stick them in a small room with a $15 forced air electric heater with variable thermostat from WalMart and close the door. I use my back porch for this. Others use their furnace room, mudroon, corner of the unfinished basement, even an OPEN closet with the heather just OUTSIDE of the closet, blowing hot air in. Just be sure not to get a heater with only Hi/Lo settings. Those equal frozen and cooked.
2. Place a heating pad under the roach bin. Be aware that most modern heating pads have a shutoff switch. When they reach a certain temp, they turn off AND DO NOT TURN BACK ON. I hear that Walgreens still sells heating pads that provide continuous heat, but you'd have to verify that yourself.
3. Try the same thing with an electric blanket. These provide continuous heat and I got one for $10 at Wal-Mart last week.
4. Use pipe heating cable from the hardware store. It's a flexible electric element that you can wrap around frozen pipes to thaw them out. Hook the tape up to a dimmer switch to control the amount of electricity going into the heating cable (and therefore how hot it gets). I got a lifetime supply for my snakes for about $30 at Menard's this weekend.
Be sure to remind your mom that these are tropical roaches. The word roach kept me breeding enough crickets for 15 dragons for a year because of my wife and it was miserable. They stink. Roaches don't.
Further, tropical roaches do not breed well below about 82 degrees. They can still produce a few babies below that temp, but they'll never infest your house at any human temperature. Additionally, they don't THRIVE without fruit in their diet. Further, unlike the dreaded German cockroach, they aren't able to live for months on virtually no food (such as animal dander or wallpaper paste, my 2 favorite examples). They need a steady supply of a diet that's balanced between high protein and plant matter.
Best news is a balanced diet can be as simple as kitten food with the weekly addition of 1 of any fruit (except citrus fruits other than oranges). Some people's dubia's eat the same greens your dragon will, which gutloads them. Mine won't, for some reason. The occasional carrot is also appreciated and mine go crazy for cantaloupe.
Roaches are a bit more expensive than crickets on a per bug basis, but your dragon is going to eat fewer roaches because they are bigger than crix. Check out my 2 favorite suppliers:
Marcus at
http://www.afexotics.weebly.com and
Ian at
http://www.theroachranch.com
Finally, roaches come in all sizes, from small enough to feed a hatchling dragon to big enough for an adult.
I hope this helps and I hope you don't get trapped into buying crickets. They are a pain to deal with compared to roaches.
Frank