My last full time job, the CEO and a major department manager both replaced their desks. I found out about it, had a look and told them to not have the smaller old one removed, that'd I'd gladly take it off their hands. I borrowed a friend's truck to get it home. It sits now in my computer room, a lovely big all wooden affair with smooth as silk drawers and two slide in/out extensions on either side. On it I have two monitors, a laptop, my midtower's keyboard, an FM receiver and front and middle speakers, my cordless phone receiver, my NAS, and probably some things I forget now.
Do you have any Habitat for Humanity Restore locations near you or other similar second hand stores? That's where I got my wide, deep desk made of real wood. Its heavy as hell but a I got it for ~$30 (this was also like 8 years ago)
I did hit up a local used office furniture outfit for both of my desk chairs -- high end Case chairs and I love them.