Check the newegg recertified/open box/clearance areas.
Also geeks.com has 478 boards in the $25-$35 area,
I believe that's where I got a socket A board from for $25 awhile back.
The fsft forum section might have some cheap ones too.
my ic7 max 3 broke awhile back and I replaced it with a regular ic7, which also broke. The northbridge chips had the corners crack on me.
good luck