Hi there
If you do a search on here for The Edge, I am sure you will get your question answered.
I too looked into getting this system, they looks great (from online and brochure) they sound great, but I have heard a lot of comments saying there quality isn't up to scratch.
From personal experience if you don't have a lot of money to begin with, I would say you would be ok to practice with them, but then some nail tech say start as you mean to go on and only practie with the system you want to use. Saves money in the long run, and a good quality product tends to have more workability and perfromance making you job easier.
I have brought their soak off gels (to do a fench manicure) and although they looks lovely, they didn't my clients very long. Either peeled off or chipped.
Sorry, I hope I have helped a little bit :lol: