You're just a tad low on the price range there.
I could only find one mainboard fitting your requirements at $80 or below:ASRock H61M/U3S3 Micro-ATX
Another one that fits, but is $85:ASRock H61ICAFE full-ATX
The rest that qualify are $90 and up. There are a few $60-70 boards, but they don't have USB3 and SATA3.