AFAIK it is regularly put out to tender again, but it’s quite possible that the same person wins it again. Otherwise, just get yourself an RLU wood stove, that’s less complicated. Is everything prepared with the pressure switch? You have to chase so many grooves...
I have chosen a room air-independent stove and have also prepared everything for the pressure switch. Only the price of having it done by a professional company is way too high for me. 5,000 or 15,000€ is an enormous difference for me.
Maybe I will find a stove builder soon who will only do the most necessary technical stuff and I can do some of the work myself, so that I can get it down to at least 6-7k here. The nice ambiance of a stove would still be worth it to me.