Any idea what kind of warranty if any comes with these? Has yours seen a lot of use? Were you asking $3000 for yours plus shipping?
Warranty is... "Chinese". What that means is the warranty (2 years I believe is what they stated) is as good as the people behind it. In the case of Setec, they have been good in the past, and have been ernest about making things right. The warranty on these types of things is best when they can help you find the problem and ship you replacement components, rather then mailing the whole thing back & forth.
That said, there is a pretty active community that was using these for Spark EVs and Leaf's to overcome their ananely small L2 onboards (3.3kw). They have proven to be very robust, and I only know of one that had a component failure in it. Setec was prompt in shipping out a replacement.
I would include shipping the in the price. My preference would be to deliver it myself to a buyer a reasonable distance from me here in the PNW. I would deliver in Or, Wa, Ca, Id or Nv. Personal delivery would mean I could make sure the buyer knows how to use it & is happy with the operation.