I would like to put a disclaimer on this: Kru Nick and his wife Ashley gave us a free introduction to Muy Thai. So I haven't taken any classes or paid anything.
However, here is what I can tell you:
a) Come hydrated and make sure you have enough food in you to sustain an intense workout.
b) It feels like boot camp, but the instructor is very understanding of people's conditioning levels.
c) If it is your first time, you will be sore for two to three days.
d) When you review the website, it looks fairly easy, but it's not. It's intense conditioning.
Overall, I think this is something I'd consider if I was in a bit better shape. However, if you have the motivation and desire to get fit, I'd recommend checking this place out.