Sounds obvious when you think about it, but I have not yet had a bad experience using any of the "official" businesses that trade on eBay when purchasing a range of small white goods, have never bought a fridge or anything but I am considering buying a three piece suite this way after xmas.
The reason is very simple - eBay traders value and jealously guard their feedback scores, if you have a problem and tell them first then they tend to do anything they can to stop you giving them bad feedback.
Choose your trader well, choose a UK one with plenty of feedback and an official eBay creditation and you won't go far wrong.