They have different sets you can buy. Go to their website at
www.proactiv.com . The cheapest set they have, I believe is $29.99. You can have them ship automatically and you set the frequency from every 6 weeks to every 14 weeks. I had mine set to every 14 weeks, but I still haven't used up everything so I just cancelled the automatic shipping. I'll reorder when I run out. As of right now I have 2 of everything from the 2 shipments I've received already. I heard you could find people selling it on ebay, too. I also think one of the pharmacies have something similiar. Maybe it was Walmart? Do a search on this site for ProActiv and you can find more info.