Hi and welcome to the forum. I don’t know Red Dragon (they’re a long way from me) but they do appear on the Recommended List on this forum. I’ve had a look at the website; they don’t make any daft claims. I would want to visit (as always) and check what the vehicles are like. I’m not convinced that they will be running the trucks shown on the site - though that is only my gut feeling and not based in fact.
IMO they have fallen into the trap of not clearly displaying their fees - but that doesn’t make them bad trainers.
Good luck with your decision, Pete 