Bought this sturdy 3 seater sofa for $350 from Ikea a few years ago. It's still in good condition.
http://www.ikea.com/ms/en_CA/pdf/buying_guides/FY10/LILLBERG_Buying_Guide.pdf

I'm moving to a different city so giving it away for $40. However, YOU will need to pick it up from Mountain View. You'll most likely need a pick-up truck or a U-Haul truck. This sofa is 78 inches long and 35 inches wide so won't fit in a standard sedan.