Hi Becci
I have a feeling that St Tropez only sell to salons that have all their other gear - big extractor fan thing that sucks all the solution away and other things - but don't hold me to that, I could have imagined it all. I personally don't like St Tropez cos I look like a tango girl when I have had it in the past and it only comes in one strength but that is my personal opinion. Many geeks love it and swear by it and I'll admit it is very well known but there are others out there.
Who did you train with? Could you not use their solution? I did get a sample of Xen Tan but it smelled sooooo awful that I couldn't bring myself to use it, but I am quite funny about smells and I refuse to use something that doesn't smell nice, especially as I was the one who I was trying my samples on and I wasn't going to smell myself like that all night! Lol! I would get a whole load of samples from as many place as you can think of (do a search on here as there are simply squillions) and spray as many victims as you can and see which solution you like best. There is a Poll on here somewhere with the solutions that people use most on this site.
Good luck with either finding your St Trop or with trying any others.
Lx