I like the brown banded cricks as well and will start breeding them instead of the nasty attitude black field cricks I raise now.
I have been getting mine from Ghanns, but lots of places will mix the species, so if you order 1000 cricks, you are likely to get a mix of at least 2 different species even from the best farms.
Something I learned about brown banded cricks, they are not nearly as hardy as advertised and need high temps.
I just received a order of 1500 1/2'' banded cricks from Ghanns and every single one of them was DEAD ON ARRIVAL!!

They had only been sitting on my front pourch for an hour, and they had a heat pack. But it was a cold and windy day.
I have been buying cricks through the mail since the early 1980's and even in the bitter winter, have never received a 100% DOA.
If you live in a cold place, you've been warned!
I got screwed out of $37.00, so be careful and plan well before you order.