Just got back from my local Game and noticed they had the above, pre-owned, for £7.99 each down from £14.99! The offer seems to be online too with the added bonus of 11% Quidco!
Also available in the Buy One Get One Half-Price promotion - credit to leeb2000
Both will obviously be UK PAL stock too, as i'm aware the Game Collection do the multi-region bundle copy of Motorstorm.
If you have a 360 aswell, these two plus Ninja Gaiden II can be had, using the attached voucher, for £30.97 delivered - 11% Quidco!!!