You can get the IPS225V for £89.99 at amazon at the moment. And I have a £20 amazon voucher, I might pick one up for £70!
£98.99 @ Amazon. I don't see it for £89.99 http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias=aps&field-keywords=IPS225V&x=0&y=0
Amazon's prices can often fluctuate throughout the day. I have noticed it many times before, especially with computer hardware. It is possible they simply changed the price (I think it is done through some sort of electronic pricing system which follows market trends although I am not sure).