Although 7 inches sounds small for a monitor it is a good size for a Tablet as it fits in one hand nicely allowing the other hand for manipulating the images on the screen. Readability of the text is about the same as a paperback book with the added advantage of "Pinching to zoom" to enlarge the text or images easily. Weight is also a helpful factor as the 7 inch tablet is approximately half the value of a ten inch tablet such as the iPad. Prices range between $100 to $400 depending on the options and specifications. Useful options include SD card reader, standard USB input and HDMI output. The USB port can be used for a keyboard while the HDMI output is useful for viewing the sceen on a TV or a projector.