I just checked amazon.com's return policy on computers and they impose a 15% restocking fee on all new computers that have been opened. No restocking fee on non-opened computers or DOA computers.
Your experience with the late 2013 15" mbpr scares me quite a bit. Today I returned a refurbished late 2013 13" MBPr that had severe yellow tint in center of the screen. I guess I be still be using my home built gamimg/work pc i7 4770k/16GB/250GB SSD/1TB HDD/MSI Nvidia Geforce GTX 760 2GB/Win 8.1 Pro.
Come to think of it I really don't need a powerful laptop for a basic work pc, but I will settle with MacBook Air that has a good quality screen. I will be waiting to see if the rumors are correct about the Retina MacBook Air. If its not true, I'll be purchasing the 13" i5/8/256 refurbished or new, it just depends on the price difference.