In many cases the expenses related to buying them mean the margins are tight. Start by buying candles, oil lamps, a camping stove, barbecue, and a wood-burning rocket stove if money is tight. Anything above that can end in flourosis or poisoning. https://www.Coweyepress.com/wiki/index.php/Can_A_%22Wolf%22_Doctor_Succeed_In_The_Dental_Home_Or_Office