Money Suckers
The Medium Popcorn Exists To Sell You The Large
A middle option priced almost level with the top one is not there to be chosen, it is there to make the largest size look like the sensible decision.
Three sizes are offered. The middle one costs almost as much as the largest and holds noticeably less. Very few people buy it, and it is doing its job perfectly.
The middle option is priced to look silly
Set the small at a low price, the large at a high one, and the medium just under the large, and the medium becomes an obviously poor trade.
Nobody has to calculate anything. The comparison is visible on the board, and the large plainly offers more for very little extra money.
The medium is not failing to sell. It exists to be rejected, and its rejection is what makes the large feel like a decision rather than an upsell.
People choose by comparison, not by value
Faced with unfamiliar goods, buyers rarely have an internal sense of what a portion should cost. They evaluate the options against each other instead.
That makes the shape of the menu more influential than the absolute prices on it. Adding or removing one option changes what the majority pick.
Presented with two sizes alone, most people take the smaller. Presented with three arranged this way, the same people move up without feeling pushed.
The contents cost almost nothing
For popped corn, fizzy drinks and similar products, the raw material is a trivial share of the price. The cup, the lid, the counter staff and the rent are not.
Since the expensive parts are the same regardless of size, every extra measure of product is close to pure margin, which is why upgrading is encouraged so warmly.
The larger size is genuinely better value per unit. It is also the outcome the pricing was constructed to produce.
The same shape appears everywhere
Software plans arrange three tiers with a middle one built to be unattractive. Wine lists are famously arranged so that the second cheapest bottle carries the best margin.
Estate agents show a disappointing property before a good one. Comparison sites place a deliberately poor option beside the one being promoted.
The technique needs no deception at all. Every price is honest, every quantity is stated, and the arrangement does the persuading.
Removing the decoy changes the answer
Take the medium away and the same buyer, offered the same two remaining sizes at the same prices, will frequently choose differently.
That is the clearest sign that the preference was never fixed. It was assembled at the counter, from whatever was on display at that moment.
Which is why the middle size stays on the board even though the tills show almost nobody has ever asked for it.
Questions readers ask
Are card surcharges legal?
It depends entirely on the country. Some ban them for consumer cards, some cap them at cost, some permit them. Check your local consumer authority.
Can I insist on a free paper bill?
In several jurisdictions there are protections for customers without reliable internet access or in vulnerable circumstances. It is worth asking explicitly.
