So I have a 2006 MacBook Pro where the motherboard has basically fried. I really think it would be best to upgrade to something newer so I was wondering how much should I sell the computer as is?
Definitely upgrade to something newer - You'll notice a world of difference between that 2006 MacBook Pro and a new one
A 2006 MacBook Pro would be worth little. One with a fried motherboard... Negligible, unfortunately. You could try selling it as is on eBay, but don't expect much.