If you live in the Columbus OH area these may be worth a look. I would recommend a visual inspection prior to negotiations. My interaction with the seller got them to post more detail on condition and content. They have no idea if these are functional. One of the units has the dual power supply option. Seller is showing free shipping, but I think if you could pick them up locally you could reduce the price substantially.
Lot of 4 HP Proliant ML30 GEN9 Bare-Bones No CPU, No RAM, No HD | eBay
Lot of 4 HP Proliant ML30 GEN9 Bare-Bones No CPU, No RAM, No HD | eBay