I've been buying new sets every weekend to support the series....and maybe to go faster on new....but I swear these things seem to go faster after several sessions...that's what my results reflect. I was able to give away one set but still sitting on 2 more sets. They're in Orlando so if someone wants to come by.....bingo....free. If you want them shipped.....let me know. I tried to find Linda Stewart to give her a set earlier this year but have been unsuccessful......so Linda !! …..Hey !!…...I'm sitting by the phone