The reading stoves use the "tri-burner" coal feed and grate system. These are OK but not great for efficiency. The older Alaska stoves use this same design so IMO the value of the stoves is the same as a refurbished Alaska stove with new paint, gaskets and glass. I sell my rebuilt Alaska stoves with upgrades to the triburner which includes separate combustion fan, rod end linkage and coal-trol for $1,500.
Just my $.02 but I would'nt pay much more than that for a brand new reading stove since they are using a design that needs a few "improvements" to work on par with today's stoves.
I attached a pic of the mods to give you a reference if you go to look at a stove. Happy hunting.