I was in Staples in South Harrow today about to buy an A3 printer, when I spotted this multi-function device on sale. It's an A3 printer, a scanner, a photocopier and a fax, all in one device. It was on half price, at £149.88 - with a note saying that you can get £60 cash back from HP! I looked on Amazon via my iPhone, and it's £208.98 delivered...this is quite a lot cheaper :-)
I bought it, took it home, and have just filled out the cash back - it's easy to do online, you just need the serial number of the device you purchased, no need to cut out bar codes and post them off!
The printer prints well - I bought 500 sheets of A3 paper for £8.99 while I was there, and I am very impressed with it. Replacement cartridges for the printer are not expensive if you buy compatibles - for example, from http://www.cartridgepeople.com/Catalog/8105/officejet-7500a-e910a.html
you can get 3 black, 2 cyan, 2 magenta and 2 yellow XL (properly full!) cartridges for £44.92 delivered. That's a lot of A3 printing :-). I've bought from cartridgepeople before, their compatible inks are good.
Of course, if you don't have a Staples nearby, you can also buy this online - they do free delivery. If you do it online, please make sure to remove the extra insurance (anycare or some such) that they add automatically, so that you get this price.
To register for the cashback, go here:http://h40059.www4.hp.com/savemoney/hp-officejet-pro.html
If you're after an A3 printer, I think this is a very hot deal indeed...