With the EPA getting ready to ban 100 LL Av Gas and there is no suitable replacement for it, you can expect transport around Road Less Alaska to become even more expensive. A whole lot of Airplanes are going to get grounded or the ones that can afford it STC installations of Diesel Engines, Cessna Got a 182 that is going to burn Jet-A but its going to cost close to 600K by the time they make them Then Rolls Royce has an engine that will replace IO-540's its a turbine RR-300 and you can expect it will cost around 500K to retro fit your airplane. We are in for some really tough times.
