Yeah, I've seen them at one or the other, I forget which. I just remember it was at a location I hadn't been to prior. Neither of my "hometown" stores carry them.
But exactly, if new keepers are coming in and asking for snake setups a tstat should be on top of the list of items the store clerks mention.
Maybe even the packaging for heating equipment should have a giant warning on it.
But, with just a few minutes of research new keepers would know how important tstats are. It's a shame many people think reading a care sheet or two is adequate research.