I have had good luck with using Ebay... everything is just as if you bought it in a salon or over the internet, but cheaper! I just keep searching until I find one that is a bargin (including the shipping) and I have a max bid I use. If I lose out on one at my max bid, I just keep trying... eg, the Pureology SS shampoo retails for $26 or $28 dollars, ( over the net it is plus shipping!), so if I bid and get it for $20-25 including shipping, I feel I have gotten a bargin. Once my supply is about 1/2 full I start my Ebay search again!