I told my wife I wanted to buy a Freshwater Master Test Kit, by API. She left out to do her errands and came home with the kit from Petsmart. They usually retail for $27.49, but the packages all had a $8 instant coupon that the API rep. had placed on the kits. I called today to find out if it was this store only, or if it is a nationwide promotion. The associate i talked to said the rep. had been to other Petsmart stores, but didn't know if it was in all the stores across the nation. So if you need a kit, call your local Petsmart and ask about the coupon. As luck would have it, about a half hour before she got home, I pressed the "commite to buy" button on Ebay. $20.44 shipped free plus Ca. sales tax, so it came out to the same cost within a few cents. I don't have any love for Petsmart. I just want to get the cheapest place to buy it, out there so others can take advantage of it. aquaally