Exclusively for Prime members, Amazon offers the ASRock AMD A88X DDR3-2400 FM2+/FM2 Socket microATX Motherboard
, model no. A88M-G/3.1, for $60.99
with free shipping
. Excluding the below mention and other Amazon vendors, that's the lowest total price we could find by $33. It features an AMD A88X (Bolton D4) chipset, support for up to 64GB of RAM, one PCI-Express 3.0 x16 slot, and USB 3.0 and HDMI ports. (Note: This item is temporarily out of stock but can be ordered now at the above price.)
Want it sooner? Newegg
has it for $60.99 plus $1.99 for shipping.