Boxed sets appear every holiday season priced below what the same products cost individually. The arithmetic is real, but the contents are rarely identical to the full-size range.
The components are often sized for the set
Sets frequently contain travel or trial sizes rather than the standard package, and the comparison price on the box may reference full-size equivalents.
Smaller fills cost far less to produce than the price difference suggests, because much of a product's cost sits in packaging, filling and distribution rather than in the contents.
Where a set does contain full sizes, the additional items are usually lower-cost accessories chosen to raise the perceived value of the box without raising its cost much.
A set is one unit to handle
Retail cost is driven heavily by touches. A set arrives as one carton, is priced once, is placed once and is scanned once at checkout.
Selling the same items separately requires individual receiving, ticketing, shelf space and replenishment, each of which consumes labor that the set consolidates.
Gift sets also ship efficiently. Rigid boxes with fitted inserts survive transit better than loose items, reducing damage claims during the highest-volume weeks of the year.
The occasion is not price-comparison shopping
Gift buyers are usually solving a problem under time pressure rather than optimizing a purchase, and a presentable box that looks like a considered gift solves it.
That means the set competes against other gift options at a similar price point, not against the shelf price of its own contents.
Retailers price to that comparison. The set has to feel generous next to other gifts, which is a different target than beating the unit price of a single item.
Sets are a route for clearing slow inventory
Bundling a strong seller with a slower-moving product moves both, and the combined package obscures the individual prices that would otherwise reveal the weaker item.
Discontinued shades, sizes and variants often reappear inside holiday sets, since the set format tolerates assortment that would look picked over on a shelf.
This is also why sets are produced in fixed quantities and rarely restocked. They are built around inventory the manufacturer already holds.
Post-holiday markdowns follow a steep curve
Gift packaging has almost no value once the occasion has passed, and the same box that carried a premium in December becomes a liability in January.
Retailers cannot return most of it, so remaining sets are marked down aggressively and quickly, often falling below the value of the largest single item inside.
Buyers willing to use the contents themselves rather than give them away capture that collapse, which is the one point in the cycle where the arithmetic clearly favors the shopper.