Very good. It's reassuring to see a shop taking time to educate, as well as sell. The only part that didn't quite sit right for me is where you state that thermostats can be used to control a heat source. I personally would want to change the emphasis and make it clear that they must be used in conjunction with a heat source.
I realise that economics are the ultimate deciding factors in any business, and slapping on an additional £40 to the cost of a beginner setup can be off putting to potential customers - but it's a crucial area where I think many many shops fall down on. I use it as a barometer for how good a rep shop actually is.
But yeah, apart from that one point a well written care sheet. It's difficult to generalise about all reptile keeping and still include sufficient specific information to be useful, and I think you've struck the balance very well.