The tank they're in is full of pods. Before, I was putting them in my Chaeto tank(20L tank) which has a lot of pods in the chaeto as well. I put them in this tank because it's easier for me to catch if needed because there's no rocks. Noticed they were getting the pinched stomach. So I moved them to my "holding" tank that is full of live rocks and some acans, frogspawn, and dendros. This is the tank that I keep to hold finicky eaters before moving them to the main tank. Most of the time is fishless so it has a tons of pods.
After two days in this tank, I saw the pinched stomach is getting better. I don't know if they ate the LRS food, mysis, brine, live blackworm, flakes that I feed them or picking out the pods.
I got these guys at the regular LA section for $89 each. So less than half price of the one on DD. But price is not so important as long as they're eating and ready to adapt in captivity.