Here in the Philippines it's almost everywhere, those LGA 775 Mobos that is being selled in here are almost free ranging from 20-30 USD (1000 PHP-4000 PHP)
I saw ROG Maximus Formula DDR2 LGA 775 Overclockable Mobo that support SLI or maybe crossfire for like 25 USD, and a Gigabyte DDR3 LGA 775 for like 30 USD, but not overclockable and does not support SLI.
Here in the Philippines, most people have their computer scrapped (even though it's working) they sell it in a very low price thinking that it's pretty much useless anymore haha, that's why it is priced like that.