I have 9 of these, including breakout boards.

Each set is:
1x Delta DPS-2400AB B Rev 01F
2x Rev 5 X-Adapter
16x 26in PCIE 6pin-to-8Pin (6+2 pin) 14-AWG cables

$250 each OBO

I have many extra of the same PCIE power cables. I can throw more in as needed.

I also have more of these than I can shake a stick at, all still NIB, $8 ea OBO: https://www.centrix-intl.com/details.asp?Parent2ID=1&productid=13407