If one can perform their own mechanical work and handyman skills for the conversion portion -
Price of the schoolies with modern 4 stroke engines and running gear, the easy of maintenance and a never ending supply chain for the school buses cheap parts and almost any shop will work on the Cummins engines and Allison WT . Plus they like living off the grid and not confined to pavement
So are old MCIs, Eagles, and Prevosts. Younger generations have little interest in ANY bus conversion. Witness the rapid shrinkage of FMCA. They started including rv's and travel trailers to stop the bleeding. 5 to 7 miles per gallon is a killer anymore. A bus conversion is too expensive to own and operate anymore except for well heeled and very mechanically inclined.Even here, Bno, and Facebook have fewer followers any more. Ask Gary. He knows.