Solid fuel boiler

I have two solid fuel boilers almost finished. Each boiler is similar to the ones in the pictures shown. The fire box is 27 inches in diameter and just under 4ft long. Has a full water jacket around the firebox with a heat exchanger on top, so the flue gasses leaving the firebox also heat the water on its way to the flue.. The boiler is fan assisted, so hotter fires make less smoke.. fully controlled by an easy to use control system.. which can also be remotely controlled from inside the house.. so the heating can be set to come on and turn off at set times. And turn off when the house gets up to temperature... this type of boiler normally sells for €4000. I'm doing a sale for the June Bank Holiday €3500 each first come, first serve..and after the bank holiday weekend the price will be going back up...