Might be already posted but so many good boxsets for under a Tenner Plus quidco or Topcashback. I personally like topcashback better as there is no commission and they pay more :)

Or 5% using topcashback.co.uk

Boxsets are Starting at £3.99 link
http://hmv.com/hmvweb/listSearch2.do?atozArtistFilter=none&atozTitleFilter=none&simpleSearchString=09WAB+LT10&searchMode=1&sort=search_sort_attribute_price_product_artist_sort&pGroupID=-1&pSubGroupID=-1&pGenreID=-1&pTertiaryID=-1&code=09WAB&primaryID=-1&subPrimaryID=-1&secondaryID=-1&tertiaryID=-1&searchUID=-3999964698614441639&leftComponent=19720&headComponent=19726

5 Harry Potter films for £9.99
http://hmv.com/hmvweb/displayProductDetails.do?ctx=280;-1;-1;-1;-1&sku=709436&affiliate=buyat&lpgrp=network&batuid=1000

Philosophers Stone
Chamber Of Secrets
Prisoner Of Azkaban
Goblet Of Fire
Order Of The Phoenix

Rocky: Complete Saga: 6dvd: Box Set
Was £49.99
You save £40.00
DVD £9.99
free delivery

£20 on Play.com

£4.99
Arnold Schwarzenegger Collection: 4dvd

Predator
Commando
The Terminator
Conan The Barbarian

Is an example :)

£10-£15 Boxsets
http://hmv.com/hmvweb/listSearch2.do?simpleSearchString=09WAB+GT10%2BLT15&searchMode=0&sort=search_sort_attribute_grading_sales_sort&pGroupID=-1&pSubGroupID=-1&pGenreID=-1&pTertiaryID=-1&searchUID=-4694116147349452621&leftComponent=19720&headComponent=19726&code=09WAB

£15-£20 Boxsets
http://hmv.com/hmvweb/listSearch2.do?simpleSearchString=09WAB+GT15%2BLT20&searchMode=0&sort=search_sort_attribute_grading_sales_sort&pGroupID=-1&pSubGroupID=-1&pGenreID=-1&pTertiaryID=-1&searchUID=3060069556928969701&leftComponent=19720&headComponent=19726&code=09WAB

£20 and over Boxsets
http://hmv.com/hmvweb/listSearch2.do?simpleSearchString=09WAB+GT20&searchMode=0&sort=search_sort_attribute_grading_sales_sort&pGroupID=-1&pSubGroupID=-1&pGenreID=-1&pTertiaryID=-1&searchUID=-5158367815929730475&leftComponent=19720&headComponent=19726&code=09WAB