You can make a boiler system as expensive and as complicated as you want. But more or less all the boilers are two steel boxes stacked on top of each other with a ceramic nozzle in between and a fan to blow some air. When I see some of the numbers people pay to put in an insert or woodstove (5k+) boilers seem like a good investment. And you get even heat throughout the house. Every industry is going to have its share of shysters, hucksters and upheaval. That's the free market. The gassification boiler market is not immune.