Just to make my point a little clearer, a few important 3rd party Android Shops:
https://slideme.org: No Kindle, No Nook, No Kobo
http://www.handango.com: No Kindle, No Nook, No Kobo
http://andappstore.com: No Kindle, No Nook, No Kobo
http://appslib.com: No Kindle, No Nook, No Kobo
Especially the last one is interesting as it is shop run by Archos. So yes the Archos is cheaper but what are you going to do with it?