29p won't buy you a lot these days. Except TWO hilarious PC RPGs, that is! Cthulhu Saves The World & Breath Of Death VII will set you back just £0.29, netting you two excellent parodies that are still both mechanically excellent games in their own right.
I described Cthulhu Saves The World as "absolutely delicious." I described Breath Of Death VII as "witty and hilarious." Now I describe them both as "basically essential if you like buying great games for hardly any money."
UPDATE: Thanks to jaystan @ HUKD, who beat me to it!