And it will cost even more NOT to run an aircraft !!!!
Beware of the hangar queen that has sat around doing nothing....unloved, unused, it will seize up and rot away! think of all those yachts tied up to marinas and never used, growing barnacles and weeds....and mould.
Any machine works best when used regularly, so be realistic about how much you might use an aircraft....I found it worked well to put a towhook on my Supercub and it was used by the gliding club happily for years and years, and when I had at last to sell, it had gained value because it had been looked after properly.