Resources Blog

April 14, 2025

 

First, before anything, always investigate the seller. There are countless scams and even more victims of fraud in the shipping container market. These scammers have convincing and legitimate looking websites. We recommend avoiding buying from an online marketplace like Facebook until you've thoroughly looked into the legitimacy of the seller. The container market is very competitive and margins are slim, so if a deal looks really good - its likely a scam! Always buy from a trustworthy source that will allow you the see the container and MEET you in person BEFORE any money is exchanged. These scammers will commonly use addresses belonging to, or next to, a legitimate business to appear credible. Many have fallen victim to this, so buyer beware!

 

When you’re browsing shipping containers for sale, the variety of options can be overwhelming. New, used, refurbished — and then there are grades like "One-Trip," "Cargo Worthy," or "AS-IS." So how do you know which container is right for your storage, transport, or building needs?

 

At The Storage Box, we simplify the process by offering high-quality shipping containers for sale in Ontario and beyond, with transparent grading so you know exactly what you’re getting. In this guide, we break down the most common shipping container grades, what they mean, and how to choose the best container for your purpose.

 

Why Buy a Shipping Container?

Before diving into container grades, it’s worth revisiting the many reasons why people invest in shipping containers for sale:

• Secure on-site storage for tools, equipment, and inventory

• Portable offices or workshops for construction or remote work

• Container homes and cabins, thanks to their structural integrity

• Event setups or pop-up shops

• Agricultural and industrial use, including machinery storage

Whether you need a container for personal, business, or construction use, knowing the grade helps ensure it meets your needs and budget.

 

Common Grades of Shipping Containers for Sale

Not all shipping containers are created equal. Their condition, age, and usability determine their grade — which directly affects price and function.

Here’s a breakdown of the most common container grades:

 

1. One-Trip Shipping Containers (New Condition)  Condition: Used only once to ship cargo overseas Typically under 1 year old Minimal wear and tear Structurally sound and wind/watertight Often comes with factory paint, flooring, and doors in excellent condition	Best for: High-end use cases, inventory long-term storage, container homes, resale Why Choose One-Trip Containers? They offer the best quality without being technically "new" — ideal for customers who want a container that looks professional and performs like new.   Buying Tip: Many people starting their search for a container end up purchasing a higher grade (one-trip) containers due to their value and condition.
2. Cargo Worthy Containers (CW Grade) Condition: Certified to be structurally sound for ocean freight May show signs of surface rust, dings, or paint wear Still wind and watertight Can pass inspection for international shipping	Best for: Economical, mobile workspaces Why Choose Cargo Worthy Containers? They're tough and dependable for transporting heavy cargo or for rugged jobsite use. This is a solid mid-range option for those who need strength and are ok with sacrificing appearance.
3. Wind and Watertight Containers (WWT Grade) Condition: Not suitable for shipping but keeps contents protected from the elements Doors, seals, and floors are intact May have visible wear, rust, or previous repairs Still structurally reliable for stationary use	Best for: Static storage, jobsite equipment, seasonal inventory Why Choose WWT Containers? We don't recommend buying this grade of container. If you don’t plan to move the container, this is a cost-effective option for farm equipment, hunting equipment or general outdoor items.
4. AS-IS Grade Containers Condition: Sold in current condition with no guarantees Typically already have structural damage, leaks, or missing components Not recommended for secure or weatherproof storage	Best for: DIY projects, repurposing, non-sensitive storage Why Choose AS-IS Containers? We do not recommend buying this grade of container. Adequate for those on a strict budget or who plan to fully renovate or modify the container.

 

 

 

How to Choose the Right Shipping Container

When looking at shipping containers for sale, ask yourself the following:

• What is your primary use case?
  Storage, transport, construction, or modification?

• Do you need a container that looks clean and professional?
  Choose a One-Trip container.

• Is price your top priority?
  Consider WWT or AS-IS, depending on risk tolerance.

• Are you planning to ship goods internationally?
  Only Cargo Worthy containers meet the required standards.

• Will the container be visible to customers or clients?
  One-Trip or refurbished containers present the best appearance.

 

 

Why Buy from The Storage Box?

At The Storage Box, we offer high-quality shipping containers for sale with clear grading, competitive pricing, and fast delivery throughout Southern Ontario.

✅ What Sets Us Apart:

• Trustworthy with honest condition grading

• Container modifications available (lockboxes, doors, windows, insulation)

• Local delivery with professional placement

• Customer support from container experts

• Long-term value with durable, clean containers

 

Whether you're a contractor, business owner, farmer, or homeowner, we’ll help match you with the right container for your needs — no surprises.

 

Ready to Find the Perfect Shipping Container?

Choosing the right container grade helps you save money and avoid future headaches. From One-Trip to AS-IS, The Storage Box offers a full range of shipping containers for sale you can trust — at prices that work for your project.

 

👉 Explore our inventory here.