Yes that is a lot of money for that unit. I hope that included an install package. Have you priced out the ceramics that need replacing after 10-20 cords. Does that include a pellet gun, domestic coil or oil back up? For that price you could get into a fully automated lambda control Tarm.
Have you looked at Tarm SP40, Econoburn 100-150 there's a used 150 for $3000, new $6995. Much simpler design and cheaper maintenance. Meets ASTM code requirements. Even a Tarm is less ($200 roughly) than that with an equipment package. a-stats x 2, circ , termovar, dump zone and automag control valve, chimney kit & temp probe, expansion tank, air separator, air vent, Aquastat temp probe wells x 2, one controls backup heat source when Tarm is not being used.
I mean the wood gun is a nice unit, but I didn't know they were that much unless there's more included. If price is right I would have a wood gun any day. Keep in mind the ceramics are consumables and WG's are pricey and not the easiest to replace. Less than $200 for the common wear ceramics in both Tarm and Econoburn. What other units have you looked at.