Waveshare is offering a wide range of E Ink displays for Raspberry Pi, and the company has now added 7.5″ display option. The 7.5″ E Ink display offers a resolution of 640×384, and can support either 2 colors (black/white) or 3 colors (black/white/red). The display costs $65 for the black and white version and $77 for the 3 color one.