Where can I get cheap used tablets?

You might have luck at a pawn shop or ebay. Wherever you buy from, make sure you test it out or at least make sure you known the items condition before you purchase.

You should go with flipkart.com

I will sell you my amazon tablet for $35. Barely used. They aren't for me.

Its the fire 7 inch.

$35 is if you pay to ship it.

You can get cheap new tablets at www.alibaba.com. Direct from China.

As well, I just bought a nice new 10" tablet with a keyboard for barely over a $100 at walmart.com.

eBay, mercari