We got that deal a month ago. Good deal, but the website is a bit dodgy. Clouds memory foam was only set up on 10th July and first time offer went onto Groupon on 12th July this year. Loads of people had problems ordering their mattress - us included. Took us 3 days for the website to actually accept the orders. Also it was very difficult to contact the company. We were told it would arrive within a week. I never received a email confirming my order, and after 2 weeks still no mattress. I phoned the company, and the number was a wee lassie's own personal mobile number. It finally arrived within 3 weeks, and is ok now. There are tonnes of forums out there complaining about the company and hundreds of people who were not so lucky as us and eventually had to write off £250.
I wish someone had warned us before we bought it, however am glad we went ahead and love ours now. Just a wee warning to everyone that this company is a little dodgy, but if willing to take the risk go for it