Saffiano is not rubberised canvas, it's embossed, hard-pressed leather, the cross hatch print is hot-stamped all over the wax/finish that coats the leather. Meaning all visibles qualities of the leather are useless because it's totally covered in wax and the motif is stamped, so they can use the lowest quality hides available and still disguise the flaws under a heavy coat of finish and hotpress it.
The joke is letting the customers think a Saffiano leather is equivalent to high-quality hide while in fact they just went for the thickest and cheapest leather available.
And yes, they ditched the "Made in Italy" long time ago but they think that Italian sounding terms like "Prada", Galleria", "Saffiano", "Milano" etc are enough to make their customers believe their bags have been hand-sewn and pampered by sweet old nonnas in little Tuscan villages since 1913, "an authentic fusion between industrial precision and the refined accuracy of craftsmanship that can only be performed by hand" (Prada.com). And they might be right, what percentage of customers actually check the quality and provenance ?
You're right it's probably a 30x for Saffiano and a 50x for nylon.