What exactly do you expect to be turned into a product here? In case you are not aware, you can buy the PDFs containing the scenarios here on paizo, and the corresponding officially printed cards (for the older seasons) can be ordered at drivethrucards.com. By my definition, that is 100% product coverage.
That said, drivethru has insane shipping rates to everywhere outside the US, which turns the officially printed cards into an unaffordable luxury item that you should rather print yourself. I can easily get Core and CotCT for the price it would cost me to get those cards over here...
Yup that right 100% product coverage from two separate companies and as you rightly point out for those of us abroad (such as the UK) a very expensive little journey. That is my point, you've just made it. You can't compare this product with the Core Boxset, AP Packs and Character Packs, all of which are self-contained, reasonably priced and sold as physical products, not downloads and print-on-demand cards. There is no comparison to make here, outside the US these products are not affordable. As for using proxies, no problem but don't call it a product comparable to the retail PACG products. That's also not a fair comparison.