A packshot proves what the product is. A lifestyle image sells why someone would want it: the coat on a cold evening, the sunglasses at a café table. It fills the supporting slots on a listing, the homepage banner and most paid social, where a plain white frame gets scrolled past.
It is also where traditional production costs climb fastest. Every setting is a location to scout, permit and travel to, with weather and daylight deciding the schedule. Brands that sell into several markets often need a different setting for each, which multiplies the bill.