A few years ago one of my friends opened up a boat rental business. He lives in a beach community in New Jersey that has a small year round population and a massive summertime crowd. His business is successful, but since most of his business is driven by summer tourists he has to be careful how he spends his money.
One of the ways he saves money is by buying in bulk. For instance, at the start of the summer season, he buys at least one Mercury oil 55 gallon drum. He saves a bundle by buying in bulk and he never has to worry about running out of oil to service his boats.