When you buy a shipping container, the biggest single decision after size is new versus used. Both are built from the same heavy-gauge weathering steel to the same ISO dimensions, and both will outlive most of what you put inside them. What differs is age, appearance, remaining service life and price — often by a factor of two.
This guide sets the two side by side on the things that actually matter: what “new” means in this industry (it is not what you would assume), what condition to expect from used stock, how the two compare on cost, and which one is right for the specific job you have in mind.
What “New” Actually Means
There is almost no such thing as a genuinely unused shipping container in the domestic market. What the industry sells as new is a one-trip container: built at the factory, loaded with cargo for a single voyage to bring it here, then sold. It is typically one to two years old and has made exactly one loaded journey.
That single trip leaves very little mark. Expect crisp factory paint, a clean and undamaged plywood floor, door gaskets that have never perished, and cam gear that operates smoothly. You may find minor transit scuffs on the exterior. What you will not find is structural rust, patched panels or a floor that has taken twenty years of forklift traffic.
Our new container range covers one-trip units from 10ft through 53ft. A 20ft one-trip container is the most common entry point.
What “Used” Actually Means
A used container has spent somewhere between five and fifteen years in ocean service before being retired from the shipping fleet and sold into the domestic market. It has been loaded, stacked nine high, sprayed with salt water, and handled by machinery that does not treat corners gently.
Used stock is sold by grade, and the grade is the honest description of what the years did:
- Cargo-worthy (CW) — structurally sound, doors and floor in serviceable order, and where a current CSC plate is fitted, still fit for international cargo. Surface rust and dents are expected and cosmetic.
- Wind & watertight (WWT) — sealed against weather and dry inside, but not offered as certified for ocean carriage. Fine for storage.
- Storage class / as-is — sold in the condition described. Cheapest steel per square foot available; expect to do some work.
Every unit in our used container listings states its grade on the listing, and we do not upgrade a grade to make a unit easier to sell.
New vs Used: Direct Comparison
| New (one-trip) | Used (cargo-worthy) | Used (storage class) | |
|---|---|---|---|
| Typical age | 1–2 years | ~8–15 years | 12+ years |
| Paint | Factory finish | Faded, patched, oxidized | Heavily weathered |
| Surface rust | Minimal | Present, cosmetic | Widespread |
| Dents | Few or none | Expected on walls and roof | Common, sometimes significant |
| Floor | Clean, unmarked plywood | Serviceable, marked | Worn; may need patching |
| Door seals | New gaskets | Serviceable | May need replacement |
| Watertight | Yes | Yes | Check the listing |
| Suits modification | Best choice | Workable | Not recommended |
| 40ft catalog price | ~$2,950–$4,250 | ~$2,150 | from ~$1,300 |
The Cost Difference, in Real Numbers
Using our own catalog rather than industry averages: a 40ft used standard storage container sits at roughly $1,750, a cargo-worthy 40ft standard at about $2,150, and a new one-trip 40ft standard at about $4,250. The same pattern holds at 20ft, where a storage-class 20ft standard starts near $1,350 against $2,000–$3,500 for one-trip stock.
Put another way: buying used typically saves 40–60% on the same size box. Delivery is a flat $500 either way, so the saving is not diluted by freight.
| Size | Used, all-in (incl. $500 delivery) | New, all-in (incl. $500 delivery) | Difference |
|---|---|---|---|
| 20ft standard | ~$1,850–$2,450 | ~$2,500–$4,000 | ~$650–$1,550 |
| 40ft standard | ~$1,800–$2,650 | ~$3,450–$4,750 | ~$1,650–$2,100 |
| 40ft high cube | ~$1,900–$2,750 | ~$4,600–$5,050 | ~$2,300–$2,700 |
Lifespan: Does Used Cost You Later?
This is the fair question behind the price gap. Containers are built from weathering steel — the class of alloys covered by ASTM A588, A242 and A606, of which COR-TEN is the best-known trade name. Weathering steel forms a tight surface oxide layer that slows further corrosion rather than flaking away the way mild steel does. That is why a fifteen-year-old container can look rough and still be entirely sound.
The industry's own regulatory framework gives a useful yardstick. Under the International Convention for Safe Containers, a container in cargo service must be examined before the fifth anniversary of manufacture and thereafter at intervals not exceeding 30 months, with the next examination date recorded on the CSC plate. Containers that are still passing those examinations after a decade of ocean service are not near the end of their structural life — they are simply past their cosmetic prime.
For a static, ground-level storage container that is kept off the soil, drained, and touched up where the paint fails, a used cargo-worthy box is a very long-lived asset. What shortens container life is standing water, contact with soil, salt exposure and untreated penetrations — not age on its own.
When to Buy New
- You are going to modify it. Cutting windows, doors or vents into rusted steel is more work and a worse result. One-trip is the right base for any conversion.
- It will be seen. Retail frontage, an office on a customer site, a container in a residential yard with neighbours.
- You are painting it a specific color. Paint goes on far better over factory coating than over patched oxidation.
- You want maximum service life. Buying the youngest box available buys the most years.
- Doors matter. New gaskets and unworn cam gear seal better and operate more easily, particularly in winter.
When to Buy Used
- It is storage and nothing else. Nobody is looking at it and the contents just need to stay dry.
- Budget is the constraint. The saving is large and buys you a bigger box for the same money.
- Farm, yard or jobsite duty. Working environments mark up any container quickly, and starting from a used unit means you are not protecting a finish.
- You need it to look unremarkable. A weathered container attracts less attention than a bright new one.
- Reuse matters to you. Buying a retired container keeps several thousand pounds of fabricated steel in service.
If you are buying used, know what to look at. The used container inspection checklist covers the structural points worth checking before money changes hands.
The Middle Ground
Two options sit between the extremes and are often the right answer:
- Refurbished units — used containers that have been repaired and repainted before sale. Better appearance than raw used stock at a fraction of the one-trip price.
- Multi-trip / few-trip containers — young units with more than one voyage behind them. Close to one-trip condition without the one-trip premium.
Both appear regularly across our containers for sale and the ISO shipping containers listings.
How to Decide in Two Minutes
- Will anyone look at it? Yes → lean new. No → used is fine.
- Will you cut into it? Yes → buy new; the conversion outlasts the saving.
- Is budget or capacity the binding constraint? If budget, buy used and buy bigger.
- How long will you keep it? Two years → used. Twenty → the price gap amortizes fast on a new one.
Every container we ship, new or used, is inspected before dispatch and the grade on the listing is the grade you receive. If you are still weighing it up, tell our team what the container is for and we will point you at the right grade rather than the dearer one.
Frequently Asked Questions
Is a “new” shipping container actually brand new?
Almost never. What the industry calls new is a one-trip container: manufactured at the factory, loaded with cargo for a single voyage to reach this market, then sold. It is typically one to two years old with factory paint, an unmarked floor and unworn door gear, which is as close to new as this market gets.
How long will a used shipping container last?
A used cargo-worthy container kept off the soil, drained properly and touched up where paint fails will serve for many years as static storage. Weathering steel forms a protective oxide layer rather than flaking, which is why containers retired from ocean service after a decade or more remain structurally sound.
Is a used container watertight?
Cargo-worthy and wind-and-watertight grades are sold as dry and sealed against weather. Storage-class and as-is units are sold in the condition described on the listing, so read that description carefully. If watertightness is essential, buy at wind-and-watertight grade or above and check the listing wording.
Can I modify a used shipping container?
You can, but one-trip stock is the better base. Cutting into corroded steel means more preparation, more welding to sound metal, and a finish that is harder to make good. If the conversion involves windows, doors or a paint finish anyone will see, the extra cost of new pays for itself.
How much cheaper are used containers?
In our catalog the saving is typically 40–60% for the same size. A used 40ft standard runs from about $1,300 storage class and $2,150 cargo-worthy, against roughly $4,250 for the one-trip equivalent. Delivery is a flat $500 either way, so the saving is not eroded by freight.