re: Has anyone ever spoken to an Amazon customer service rep?

Yeah, depending on the value of the item, they'll tell you to keep it.

I ordered a coaxial combiner, realized I didn't need it, and tried to return it the same day it arrived. Went through the return process and at the end it told that I didn't need to send the item back and a return would be processed to my credit card within 3-5 days. The splitter was like $7.