Most mid-market CPG portfolios were not architected. They accumulated. A pack size was chosen because a co-packer had the mold, a second size was added to win a specific retailer, and a club pack appeared because a buyer asked for one. Five years later the brand has six pack sizes, three of which cannibalize each other and one of which loses money on every unit sold. That is not an architecture. It is sediment.
Price-pack architecture is the deliberate design of which sizes exist, what each one costs the shopper, what price per unit each one defends, and which channel each one is built to win. Done well, it lets a brand offer an entry price point to a value shopper and a premium experience to a loyalist without either one eroding the margin of the other. Done by accident, it does the opposite.
The unit of design is not the pack, it is the ladder: the ordered set of price points a shopper climbs from trial size to bulk. A healthy ladder has clear steps, each one justified by a real increase in value, and a price-per-unit curve that the brand can defend in a buyer review. An unhealthy ladder has steps too close together (the shopper trades down for no reason) or a value pack priced so aggressively that the per-ounce economics collapse.
PackChannel roleIndex to base price/unitGross marginTrial singleConvenience trial135HighStandardGrocery core100TargetMultipackMass loyalty88HealthyClub packWarehouse value72Thin, by designPremium formatSpecialty / DTC160Highest
The point of the index column is that each step down in price per unit is intentional and bounded. The club pack is allowed to run thin because it wins volume in a channel the brand could not otherwise serve. What is not allowed is for the multipack to drift to club economics inside a grocery channel, which is the most common way an unmanaged ladder bleeds margin.
First, every pack must have a job. If a size exists only because it always has, it is a candidate for retirement, and retiring a redundant SKU often lifts blended margin two to four points by reclaiming the shelf for higher-velocity, higher-margin items. Second, the gap between adjacent steps must be wide enough that the shopper has a real reason to choose, but not so wide that a competitor can slot a pack into the gap. Third, channel discipline is non-negotiable: a club pack that leaks into grocery is a price the brand will spend the next two years trying to walk back up.
For a mid-market brand, price-pack architecture is the highest-leverage RGM lever available, because it moves margin and unlocks channels without forcing a visible list price increase that invites retailer pushback. The work is not glamorous. It is auditing every size, killing the ones without a job, and engineering a price ladder that a buyer cannot pick apart. But it is the difference between a portfolio that defends its margin and one that quietly gives it away one inherited pack at a time.
