Small update:
AsicJungle explained that this was a misunderstanding caused by their sales person who told us that they will pay (in writing and asked an invoice from us) for minor repairs we did. Their DOA policy says you must send it back as "trust your" customer doesn't extend as far as replacing a few $90 controller boards... To be fair, they did fix the units we sent in. Problem is that sending in cost almost more than the replacement part with used machines.
So now we at least know to not expect the payment, before this thread it was just no answer.
It is great that they have finally settled the issue, althought, I think it is a bad sign that they waited all this time to respond, and that you had to write this topic in the first place.
I consider this case dismissed and won't be handing any feedback to Asic Jungle.