My father has owned a boat since I was about six years old. He always seems to be behind on its maintenance. Sometimes, he has forgotten to put the right fluids in it. Other times, he just needs to wash it. Part of this is because the boat costs him a lot of money. Between gas, launch fees, and maintenance, it is a luxury that he can just barely afford.
To lower costs he always is trying to find better prices on the things that he uses routinely. To find the best outboard motor oil at a price that he can actually afford he often goes online to buy the oil, rather than going to a store to buy it. He especially tries to avoid going to buy it at the store by the marina, because they will charge him almost twice the price.