I have a small army of insect eaters so need to save wherever I can. It’s quite a big savings to start your own small roach colony. It can take a small investment to get started and a few months before it will be productive enough, but is so easy and well worth it. I have cricket problems too…when I buy domestic ones. Banded crickets are much hardier. Make sure to keep them in a well ventilated and large enough bin and you should have few die off. While the cost of shipping might seem to make buying feeders on line more expensive, in the long run it’s about the same or even less cost. Every time I’ve had to buy feeders from the pet store, they are either already dead or close to it (things like bsfl, wax worms, etc). To save a little on shipping, I order crickets/feeders a bit smaller than I need and more than enough to last a few weeks to a month. By the time I’m needing to order more, the few remaining crickets have grown but are still a good size for my animals.