I recently bought 3 sessons from groupon and they charged me HST on the price of the groupon which I will dispute on my next visit. Then the groupon I had purchased was for a machine that wouldn't be effective on my tattoo which was heavy on green and blue. I had done quite a bit of research on tattoo removal prior to attending so was aware that different machines were more or less effective on different colours. There was, of course, a hard sell to upgrade to this machine along with a further 25% discount from the inflated price but after spending a further $200, I am beyond happy with the result. After just one treatment my tattoo has faded signifiantly in the blue/ green areas. Very happy with treatment.