Things like this have started to show up on eBay: https://www.ebay.com/itm/198383386991

  2X NVIDIA Tesla V100 32GB NVLink Water Cooled X99 E5-2686v4 AI Workstation PC

  Item                              Quantity
  Intel Xeon E5-2686 v4 CPU           1
  2U CPU Cooler                       1
  Jingyue X99 Motherboard             1
  DDR3 Memory                         32GB
  SSD                                 480GB
  AMD Radeon R5 240 4K Display Card   1
  NVIDIA Tesla V100 32GB SXM2 GPU     2
  NVLink SXM2 Dual-GPU Baseboard      1
  Corsair Water Cooling System        2
  850W Bronze Power Supply            1
  Dual-GPU 300G NVLink SXM2 Baseboard 1
  8654 Data Cable                     2
  8654 to PCIe Adapter Card           1