How to find ppd's in printer-driver-escpr?

This is a puzzle to stimulate you:

I am installing an Epson XP-830 printer in Debian (wheezy). Openprinting doesn't list it (it's new), but the -820 seems like a close match. (Epson's own website also gives similar if not identical instructions for both.) See below:

http://www.openprinting.org/printer/Epson/Epson-XP-820_Series

Open's instructions are to use the driver epson-escpr. I already have it installed. It is the transitional dummy package to transition to uniformly named printer-driver-escpr, which I also have installed.

Oddly, Epson's website asks to install the SOURCE package of printer-driver-escpr, epson-inkjet-printer-escpr, and use the latter's ppd's.

Questions:

1. Since I have the "approved" binary, printer-driver-escpr, I don't see the need to download the source. Is this reasonable here? I want to proceed in a clean form.

2. The binary says it contains .ppd's in compressed form. How do I find them? I intend to use CUPS, but need to find that ppd.

Success so far would be to add the printer in CUPS, and find the ppd from the binary package.

Some extra links:

For the SOURCE: https://packages.debian.org/source/sid/epson-inkjet-printer-escpr

For the BINARY: https://packages.debian.org/wheezy/printer-driver-escpr