http://sonicare.factoryoutletstore.com/ I found this online. I'm not sure how the prices stack up with Costco, but if you use a Sonic Care, it's worth looking into. QUESTION: I have always wondered about these. Do they work well or are they a gimmick?
We have been sonicare fans for years. They also have great customer care. Our most recent handle just died and fortunately was one month shy of the 2 year warranty. The mailed out a replacement, no problems.