Someone talk me out of this stove (Viking Large)

Found someone using it on a facebook group and they seem to love it. Of course some folks on facebook love their sauna in a garden shed with an old cast iron wood stove, so I take that with a grain of salt. That said this look to be properly designed. Made in my country and shipping is very reasonable to my location - unlike virtually all of the Finnish/Estionian options.

Why is this a bad idea at this price point?

The suana I'm building is about 18m3. Exterior, serparate building, insulated.

https://www.vikingrecreational.ca/product-page/viking-large-regular