Hey neighbor....live about 1/4 mile from the Westborough/Grafton line. Anyway...are you looking for a hotel close to Sanford, with a shuttle to port, or a hotel in Cocoa Beach??
As far as a cab between Sanford and DTD...would probably cost in the area of $100. Car services run about $200 r/t from Sanford to WDW.
Have you considered just renting a car??