Turns out that it was an old, stock picture. The PDPs that I got are the refreshed versions - 512 megs with Getjar, and 2.3.4 GB. Nice little tablets. The response on the screens is a little laggy and quirky, but they work.
I put on openPDP and it's fantastic. Much better than the stock UI. However, the Google marketplace that comes with it doesn't appear to be stocked with the same things as Google Play. When I tried to get to Google Play, I couldn't get them to DL/install anything. I'll keep at it, though.
Thanks for the replies and information.
Glad you got the right models!
If you're willing to poke around a bit, search for the v6 supercharger script on XDA - it took some fiddling but gave some great speed increases for me. And if you mess things up, you know you can always just reflash with OpenPDP...
Some things in the market work, a lot don't show up.
A lot of people move to the Amazon app store for their favorite apps.
You can also sideload apps: for this first thing to try is a search for the .apk for the app - for example many app developers have their own website separate from Google Play, where you can download the .apk. Make sure you're set to load apps from 'unknown sources'. Then either download the .apk from the browser in your tablet (my first install is generally Opera to get a decent browser), or copy it over from your computer where you've downloaded it, run it from Root Explorer or the like and that will install. Of course you need to be careful, as a google search may also bring up file sharing links to .apks, which could be infected with malware, so you'll want to protect yourself. The actual developer's site is always the safest after an official market.
Alternatively, if you have another android device that does run the Play Store, download and install the apps there and then use Titanium Backup (the paid version is worth it and rewards those devs) to back up your purchases, install Titanium backup on your Planet and then restore to it. You can either use the Dropbox/Box integration in Titanium BU or copy the backed up files to your PC to transfer. This is perfectly legal, you have a legitimate copy of the app and are installing multiple copies on your android devices, which is perfectly fine.