Perhaps you could recover a portion of the value by extracting the SSD, the 1TB drive and the video card. Sell those individually via ebay or locally. Each piece is small enough to be shipped inexpensively.

Install a basic inexpensive video card and configure it to boot and run using the remaining Raptor drive. I am assuming in the age of SSD that the Raptor drive may not have the value it once did but I have not checked. If the Raptor still has resale value then remove and sell it too, install something basic in its place.

The computer would still be usable in this diminished configuration and some other buyer would see the 'potential' once he added his preferred video card and SSD.

The aggregate money from this 'sell the good bits' approach may exceed the dollars possible by selling it as a single thing.