They do not stand behind the merchandise they sell. Also too many hoops to step through to buy some of their stuff. Groupon would not allow me to exchange a lightning cable that I bought a three weeks earlier. They said I was past my 15 day return limit. This goes against the covenant of good faith and fair dealing. I bought a spare cable, when I finally got around to using it, it did not work. They did not want to hear about it. Basically they customer service person said I don't give a s*it. I've also bought other stuff previously of what turned out to be of low quality. I will never use Groupon again.