For in-store pickup only, Kmart offers the Mach Speed Extreme Play 7" 4GB Android Tablet, model no. TRIO-STEALTH G1 7, for $39.99. Plus, Shop Your Way Rewards members earn about $10 in SYWR points. (Not a member? It's free to join.) Assuming you'll use the credit, that's $40 off list and the lowest price we could find, although we saw it for $3 less in August. It features a 1.3GHz single-core processor, 7" 800x480 touchscreen LCD, 4GB flash memory, 802.11n wireless, 0.3MP front-facing camera, and Android 4.1 (Jelly Bean).
Of note, Shop Your Way Rewards members may be eligible for additional credits and discounts.