I'm surprised Taghet didn't have it! That's where I got it. Me, I'd spend the extra fit the super big Deva gel. I think it really does bring the price down. I'd try saving elsewhere. You can spend an awful lot of money searching for a gel that works that you could have used toward the one you already know does work.
You can see my wavy tutorials here: https://www.youtube.com/playlist?lis...ZNxhBHSXAW40OQ and my wavy blog is The Wavy Nation http://wavynation.wordpress.com