Got it, I had to go into the Pazio site and see what those sku numbers brought up then find them on the FG store.
Printable View
Just to clarify: you get the PDF price off the FG price. And since the FG modules are full book price (hard or soft cover), that means both a) a serious discount and b) still an awful lot of money if you have a lot. I got a lot of PDFs through the Humble Bundle deals, and the final price (I'm not going to buy because not playing PF) came to 350€ with a discount of 280 €. So that's a good reduction (about 40%) but still way above impulse buy level.