Format is the highest-leverage decision a new beverage makes, and it is frequently made for aesthetic reasons in week one and regretted in month eight. Here is the comparison across the whole chain rather than just the container price.
Container cost
Per unit, roughly and generally: aluminum cans are the cheapest at volume, PET is close behind and cheaper at low volumes, glass is meaningfully the most expensive.
But container price is the smallest part of the story, and the ranking changes as soon as you look at anything else.
Minimums
Cans have brutal minimums if you print them. Printed can minimums run to truckload quantities, which is far beyond a first production run. This catches nearly every startup brand. The workaround is shrink sleeves or pressure-sensitive labels on blank cans, which raises your per-unit cost substantially and eats most of the can's price advantage at small scale.
PET and glass both accept pressure-sensitive labels at reasonable quantities, so your entry cost is far lower.
This single factor is why a lot of small brands that "wanted to be in cans" launch in something else.
Freight
Weight is money. Glass is heavy — you are paying to move packaging rather than product on every mile. Aluminum is light and stacks efficiently. PET is light and stacks reasonably.
For local or regional distribution this is a modest factor. For national distribution it is decisive, and it is the strongest argument against glass at scale.
Product protection
This is where glass earns its cost back.
| Glass | Aluminum | PET | |
|---|---|---|---|
| CO2 retention | Excellent | Excellent | Degrades over months |
| Oxygen barrier | Excellent | Excellent | Moderate |
| Light protection | Poor (clear) / good (amber) | Total | Poor |
| Flavor scalping | None | Minimal (liner) | Real, and selective |
| Shelf life ceiling | Longest | Long | Shortest |
If your product has a delicate flavor and a long distribution timeline, PET is quietly working against you the whole time. If it is a bold flavor with fast turns, PET is fine and you saved money.
Breakage and handling
Glass breaks. It breaks on the line, in the warehouse, on the truck, and in the store. Every one of those has a cost, and some of them have a cleanup cost that exceeds the product value. Budget for it explicitly.
Cans dent, which is cosmetic but rejectable at retail. PET is the most forgiving physically and the least forgiving chemically.
Retail acceptance
Some retailers restrict glass in some sections — pool areas, stadiums, schools, certain c-store layouts. If any of your target channels have that restriction, the decision is made for you.
Cold box placement generally favors cans and single-serve PET. Shelf-stable multipack placement is more open.
Consumer perception and price
This is real and it is worth money.
Glass supports a premium price point in a way the other two do not, particularly in craft, nostalgia, and specialty categories. A cane sugar soda in a 16 oz glass bottle can hold a price that the identical liquid in PET cannot. That premium frequently exceeds the extra cost — which is the entire commercial argument for glass and the reason we still run it.
Cans have moved up-market substantially in the last decade, largely on the back of craft beer and hard seltzer. A can is no longer a downmarket signal. PET remains the value signal in most beverage categories.
Where each one actually fits
Choose glass if: you are premium, regional or specialty, your flavor is delicate, your distribution lanes are short, and your price point can carry it.
Choose aluminum if: you have the volume to print, or you are willing to pay for sleeves, and you need light protection, long shelf life, and efficient freight. Best for national distribution at scale.
Choose PET if: you are competing on price, your turns are fast, your flavor is robust, or you are launching cheaply to test a concept before committing.
The advice we give most often
Launch in whatever gets you to market fastest and cheapest, learn whether anyone wants the product, and optimize format on run two.
Brands routinely spend their entire packaging budget on a beautiful custom glass bottle before they know whether the drink sells. Then there is no money left to make more of it. A stock bottle and a good label answers the only question that matters in year one, and it answers it for a third of the price.
The beautiful bottle is a reward for having a business, not a way to start one.