I've found so many brilliant, cheap things that i already own on amazon today it would be impolite not to share...
American Heritage - Milleniarian (awesome Keelhaul/earlyMastodonesque sludge math stuff) £3.70
Stewart Lee - Standup Comedian £4 (better than everyone else)
Wu tang Clan - The W £2 (y'know the one with gravel pit)
Blood Brothers - Crimes £2.50 (bestest BB record)
Pantera - Cowboys From Hell £2 (2nd greatest metal album of the 90s)
add your own with descriptions and that