do you mean brand new or second hand ??? PC world are knocking them out at £249 Inc Vat with games check out the website...I have no idea if thats cheap expensive or what.Hope I helped.
Try Gamestation in town i got one bout a month ago £270 with any three games if you do that i would recommend getting wii play as one of the games as you get a free controller with it therefore saving you £30 ish plusthe games are quite fun.
£189 - Don't know about p&p - Back in stock later this month so maybe you could preorder. </p> http://www.komplett.co.uk/k/ki.aspx?sku=327670</p>
Get looking here mate, REGULAR! Thats how I got mine the first time there was a shortage http://stocknetwork.co.uk/wii/
If you log on the following site and register they will send you an e mail whenever there are any in stock at all the major suppliers. It took me less than a week to get one from Dixons at £179 plus about a fiver postage via DHL http://www.wii-consoles.co.uk