Also, in the USA there are free books via a service for legally blind folk. I find folk didn't know about such programs so I mention them.
My nine yr old granddaughter has Stargardts Disease, which is juvenile macular degeneration, which means she is slowly losing her sight, and she loves to read. While I was visiting over Thanksgiving holidays, I let her try reading on my Nexus 7 tablet, changing the page background to black, and text to white. I enlarged the font to the next to largest possible, and she was able to read easily. I'd like to get her a Kindle Fire, knowing the black background is an option, but I can't afford to spend that much on one child for Christmas. Are there less expensive e-readers out there that have the black background setting? I want to encourage her love for reading, and her family cannot afford an e-book for her. I'd appreciate any help.