As I type it's still only $1.95 USD - that's barely a guinea in real money.
It's a fun read if you're into inventing rule systems because it feels so much like a home-brew response to early D&D - which it is.
The pages are scans - I don't think the text is selectable (at least not on this ipad, anyhow)
I printed mine out as an A5 booklet. The typed text is a little small - but it's nice to have a hand made portable copy :)