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What if these are like a lot of CFL bulbs in that they just fail to work for as long as the claim. I've had many CFLs that claim to last 7 years go out in a couple of months to a year? If that is the case with these bulbs then you're out $50? I doubt many that buy these will retain the receip and even if they do would they be allowed to return a bulb a year or two later??