Full Mattress Lecuneey 12" Gel Memory Foam Mattress with CertiPUR-US Certified $146 (forums.redflagdeals.com)

3rd-party but fulfilled by WalMart, Pro Seller. There is a 10" queen from the same brand/seller in the weekly flyer. I ordered Thursday morning and it came the next day. After one day of leaving it to inflate in the plastic, the middle is around 11.5 inches and the corners 10". There was a paper in…