Several years ago when roaches first became really popular they were $100 for 100 mixed sized dubia here in Canada. It took them 3 or 4 years to go down to $80, now they are about $40-60 still.
I bought all mine for $20/100 though from friends.
They are more expensive because you are only paying for them once. If you think about it, a .10c cricket will end up being more expensive because you ALWAYS have to buy that .10c cricket over and over again.
With a $1 dubia that is an investment because you will never have to spend that $1 again if you are breeding them.
Dubia = asset
Cricket = liability
I mean you could breed crickets too but that's Hell.
As a general rule 1x dubia is = to 3 or 4 crickets (depending on size of dubia). All my guys are usually full after only 2 or 3 large dubia.
If you ever feed adult dubia to your chams, make sure you snip the legs off cause they have sharp spikes on them. I always feed one size down from adult.
Also they don't need as much protein as commonly believed, there is enough protein in the veggies and fruits you gutload with to keep them happy. The protein in dogfood, cat food, and ferret food causes uric acid buildup in the roaches (especially males) and this can harm your cham.
Variety is the spice of life, try to make 5 different bugs your staple feeders throughout the month and have a big variety of gutload items.....this variety can include a few different types of roaches such as green banana roach & hissing roach, so there's 3 right there and then add 2 types of worms.
Silkworms, phoenix worms, and hornworms are great.