I have a brand-new MSI H61M-P23 B3 motherboard for sale at $40. This MB has not been used and typically is priced at $69 (check out the newegg link). I got this on as a combo but ended up getting a different board for my build. Any reasonable offer would be accepted.

mATX form factor
Intel H61 Chipset
Compatible with latest Sandy Bridge processors (LGA 1155)
Maximum RAM capacity: 16GB DDR3-1333
1 PCI-E 16x
4 SATA ports
4 USB 2.0 ports

See the newegg listing for comparison - exactly the same product:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130593