Firstly... the customer service is extremely bad, pathetic or i must rather say there is hardly any customer service. When u place the order the order confirmation mail will be sent to u after 2 days, that means for the 2 days you don't even know that u have placed the order. Secondly for any query they take more than 2-3 days to reply and that too will be just copy+paste reply. They never provide tracking number, u can never track your order as and when you are going to receive.
Delivery time is 10 days, I bet, you will receive your order from overseas before you get it from groupon. When the other platform are delivering next day or within 3-4 days, this guy will never deliver within 7 days, so if u want something in time bound manner, never search for it on groupon. I suggest you all to go for COD, if at all you want to place order, never prepay, these gays will give to tough time otherwise