"So why are Pitts Special's so cheap? A friend of mine said he saw one the other day for £20k. Thats Cesspit money. And I'm staring at an ad for an S1S with only 65 airframe hours on sale for £30k. There must be a catch surely?"
JBGA - Get your cheque book out and buy an Eagle :
faster
more room
easier to land
cheaper to run
has a heater
I happen to know of 2 for sale here in The UK on PFA permits