McGordy.
No one knows if these units ever shipped to anyone or if there will actually be a delivery on them. I would be checking with Ebang before anything, if for no other reason than to confirm you would have warranty for that gear if purchased through a reseller. Next how did you find these resellers you checked with? if you've never done business with them I would hold off and do more research on them before sending cash. During the last run there were "reseller" popping up every day looking super legit, ripping people off.
Mikeywith makes a great point about the price you were quoted as well. You would be much better off buying any of the current gear out there, even with the pre-order wait times. Check out this list for some gear you might want to take a look at.
Current list of Competitive Hardware