Game Stop does it.
Wow, Best Buy would give me 150 for my iPad 2, Wifi, 16 GB.
Actually you would get $200
"Guaranteed minimum of $200 toward the new iPad Air 2 with trade in of iPad 2nd generation or newer"
Walmart is also offering a trade-in. Double (up to 200) for any iPad worth 100-200. So for the original iPad Mini, that's the best deal so far.
https://slickdeals.net/coupons/walmart/
Just waiting til tomorrow to see what Target offers.