The fastest way to price party rentals is to start from your true cost per rental, add a target margin, then validate the number against what your inventory earns over a full season — not what a competitor charges on their website. Most operators do the opposite: they copy a competitor's day rate, discount it to win the booking, and discover at year-end that their busiest items barely broke even. Pricing is the single highest-leverage lever in a rental business, and it is almost always set by guesswork. This guide walks through a pricing method that holds up across a full season.