Requirement for pressurized components
 

Increasingly, it seems, the planes that appear on market are P's (which perhaps stands to reason on a number of fronts) and there is much to read of course on the pros and cons thereof. But if the pressurization systems fail, and your mission doesn't require them, can it pass an annual without? Can it pass with some of the components actually removed ?(Naturally one can't remove something that would also affect some other system).

P's appear to be in demand right now and there are not that many for sale at any given time. The good ones sell quickly. What was true when the P337 first appeared remains true today: this is the most cost effective entry into the pressurized world and the performance numbers remain nothing short of astonishing.

Any annual can be signed off with inoperative equipment. That would include the pressurization. This being said, given how simple the system is, I do not see what the gains would be achieved by removing parts such as the outflow valve or the safety valve. Also note that the heater on a P is connected to the pressurization system. And you will still have the turbos to deal with.

The P has a switch where you can turn the pressurization on and off. You can also set the pressurization to start at higher altitudes if you do not want it on while flying low.

If you do not want a P, just wait for the right non-P to come onto the market...

Strictly speaking, the greater maintenance cost doesn't come from pressurization components but from the turbo system.