While the seller stated "no returns", that really does not apply when the item is misrepresented.
I would go through the ebay "item not as described" gauntlet.
It reads like the reasonable resolution would be either:

A significant rebate on the price, if this group was imaged reasonably, the prevailing bid would be no where near $510.

Or, a return of the merchandise and refund of all the costs less return shipping.

Not "whole" solutions but reasonable.

The quality of the drillium is not great, but is kind of period, there were only a few real machinists doing one off work back then, most was garage level work.