Not sure if this is nationwide but my local Zavvi (Canterbury) has some good wrestling dvd deals.
I recall quite a few WWE dvds at crazy prices, such as:
Hulk Hogan's 4 Disc Anthology for £12 (£22.99 on play / £22.98 on amazon)
Ric Flair's 3 Disc Anthology thing for £15 (£22.99 on play / £25.48 on amazon)
and a number of WWE Pay Per Views for around a tenner.
I have been after this ECW dvd for a while though, and its £17.99 on play and amazon, so for a tenner I picked up a bargain. 19 matches on it as well!