I trained with InSpa last year. Unfortunately I just couldn't get enough clients to use it to make it worth keeping. But would love to get it back again should things improve.
I found their training very thorough and they made sure everybody understood everything. You also actually practice on each other and they get more models in too so you feel like you're doing it on an actual client. You are assessed during this time too so they know, that you know what you're doing. You can get help on the phone too. Sometimes they are busy but you will be given other people's numbers to contact too if you need help with anything.
It's a large machine and works well. I did under my arms three times and now only have about 20 hairs to wax instead of being like a bear when it grows. I am quite hairy I suppose. Gorilla legs and all that! Haha.
It does work. It reduces hair growth. Upper lips are brilliant to do. A vast improvement almost straight away. Just be thorough with your work.
Clicks are when you press the button to flash the light. You get something like 80 free clicks per month then you pay for the clicks you do above that.
They provided a very large tub of gel etc to get started.
Regarding their prices, this is just their guide. If you want to charge more or less you can, it's your business, so make your own price lists up.
Hope this helps.