Currently my wife and I are debt free including credit cards and saved up a decent chuck of change for retirement, mutual funds, stocks, and too much into CDs(lucky only one year at 3%).

...or through a service online like auction.com?

I'm wondering if I can save some money by doing some of the work myself or if a contractor has to do all the work.

I've learned a lot already from various online sources and books.  

Hi James --  Rarely do "cash" buyers have cash sitting around in their savings account -- in my market you would generally have to have a few hundred thousands which isn't going to happen. 

I however do not want to spend the time to learn to do the manual labor and would rather just hire it out and jump in if I need to save a buck.

Most leads are online or direct mail these days.

I don't have a whole lot of money saved at this point, hence why I am starting to learn more about REI and what direction I want to take.

Per online sources I also found this, "The average American mortgage refinance costs between 3 and 6 percent of the home loan's value.

My logic is to offer them more of a return that they are getting with thier money in a savings account for the year.