last purchase was a Yehudi Menuhin complete Bach sonatas and partitas for solo violin. A double CD that arrived from eBay in practically as new condition for £1.67.
I'm really not sure how they do it/why they bother. Before that I had another Menuhin Bach double CD for £1.70 and before that Murray Perahia's Goldberg Variations for £1.20. All delivered prices, all in as new condition.
Some amazing bargains to be had on eBay if you look... one way is to do a search on CD, then list lowest price or nearest ending.