I don't know if you missed my post,
but you could find the You could by an ASUS P8P67 LE board for $150 here. Since it matches your price range.
You could get the ASUS P8P67 ATX for 170$ here.
Or the Gigabyte P67A-UD3-B3 ATX for $135 here.
All of which are available and great options for the i5 2500k (you can even get that here for $214).