What is the most cost efficient Upgrades

[Jacob Olivos]

I am in the process of renovating my home for an impending sale (I have 1 year to refinance or sell) and I am wondering what cost efficient ideas you guys have come up with to renovate your homestead or investment property yourself, The most bang for your buck so to speak.  examples of things I have found and come up with: Staining cabinets and getting hardware, Deals on Crown molding on the secondary market, new light fixtures add a upgraded feel for cheap,French doors from the secondary market.  

What else have you guys done? this neighborhood ranges in the 175-250 range and I am hoping to get 200-215 retail.