If you visit this page, it means that you are interested in buying a e-Reader or that you are inquiring about the different models available and the different brands. See the website : myereader.net/
There are a few brands of e-readers, but they are not all available in USA :
Kobo , such as the Kobo Nia, the Kobo Libra 2 or the Kobo Clara HD
Kindle, the e-readers of this brand are exclusive to Amazon like the Kindle Paperwhite
Pocketbook
Nook by Barnes & Nobles