A best bet is the current-generation
Amazon Kindle Fire 7" 8GB WiFi Android Tablet with Special Offers, model no. B0085ZFHNW, for $129 before the above coupon, , that's $1 under our May mention of a used one (this one is new) and the lowest total price we've seen. (It's a current low by $31.) It runs a heavily modified version of Google's Android 4.0 (Ice Cream Sandwich) OS and sports a OMAP4430 1.2GHz dual-core processor, 7" 1024x600 multi-touch IPS LCD, 8GB internal memory, WiFi, up to nine hours of battery life, and more.
$99 after. With free shipping