Texas ironclad beetle question

The entire ironclad beetle family is probably my favorite group of beetles, mainly the blue death feigning and texas ironclad. BDF are common in the pet trade and in large invert collections in zoos, but I was shocked to find out such an impressive and beautiful species like the Texas ironclad aren't. In fact, every single popular invert selling site and breeder of inverts doesn't have them listed for sell. BDF, diabolical ironclads, other darklings, but not the beautiful black and white Texas irons. Well, I saw one site that sold them for like 95 dollars per beetle, but I'm unsure if it's a reputable and trustworthy source. Otherwise, I don't think they occur in human care aside from some Texas natives that collected ones they came across. Is it due to their small range, and it makes them hard to come across? Is it their fungus specific diet and is it a hard diet to replicate in human care? Are they hard to breed? I just feel like Texas ironclads would be such an eye-catcher and could draw attention and start a conversation about the amazing adaptations of ironclads and other inverts in a human care setting.