You can always try lower and not use the code.They're definitely seeing the value in these... I paid $165 shipped for mine which I gave to a friend to repair when it showed up with a torn off M.2 connector - and others on here got working and complete ones for around $180. I am willing to go around $180-200 but not needing any repairs at all.
That said - I am having a hard time not throwing in an offer for another...
I'm a big believer in not trying to squeeze the absolute last penny out of someone and being fair.
My calculus is if the board is $230 shipped, you get two nodes, so 1 cpu, motherboard bits, and dual 10Gbe is actually $115.00 dunno about you but to me that seems like a good deal. Assuming it all works and there no broken bits of course.
I definitely got the impression that the seller sees value in these boards now..
To be clear I have no interest in or relationship with the ebay seller other than being a customer and buying 4 boards total now.