Amazon FBA vs 3PL: Which one is really cheaper for your e-commerce business?

Two businesses can sell the same product and have very different profits. The difference often comes down to one key factor that many ecommerce brands discover too late: the real cost of logistics. Choosing between Amazon FBA and a 3PL provider can change your margins, your ability to grow and the level of control you have over your orders.

The decision is not only about the price per shipment. You need to analyse storage, order preparation, inventory management and the flexibility your brand requires. In this comparison, you will discover when each model makes sense and how to calculate which option fits your business best.

What is the difference between Amazon FBA and a 3PL?

Amazon FBA (Fulfillment by Amazon) is a service where Amazon stores your products, prepares orders and manages deliveries to customers. It is a widely used option for sellers who want to simplify their operations within the marketplace.

A 3PL (Third Party Logistics) is an external logistics provider that manages part or all of an ecommerce supply chain. It can handle storage, order fulfilment, shipping and inventory control.

The main difference is control. With Amazon FBA, you operate within a closed structure. With a 3PL, you have a solution that can adapt better to your brand’s needs.

How does Amazon FBA’s cost structure work?

Amazon FBA has different fees that can affect your ecommerce margins. The final cost depends on the type of product, size, weight and the time it remains stored.

Monthly storage fees and the impact of peak season (Q4)

Amazon charges fees for storing your products in its fulfilment centres. During high-demand periods, such as the last quarter of the year, storage costs can increase.

This can become a problem for products with slow turnover or brands that need to keep large amounts of inventory available.

Order preparation, packaging and shipping costs

Amazon FBA fees include services such as order preparation, packaging and customer delivery. This convenience reduces operational work, but it can limit your margins when order volume increases.

Amazon’s aged inventory surcharge compared to 3PL flat-rate fees

Keeping inventory stored for too long can generate additional costs with Amazon. For this reason, poor inventory forecasting can directly affect profitability.

A 3PL provider usually offers more personalised structures based on volume, occupied space and ecommerce requirements.

What fees make up the price of a 3PL provider?

A 3PL usually works with different logistics services adapted to each business.

Costs may include:

• Inventory storage.
• Goods receiving and inspection.
• Order picking and packing.
• Returns management.
• Domestic and international shipping.

The advantage is that you can design a solution adapted to your real volume. At AMPHORA, we help ecommerce businesses outsource their logistics, digitalise processes and scale operations without losing control.

Cost comparison: When is Amazon FBA cheaper?

There is no single answer for every business. The most affordable option depends on your sales model and order volume.

Amazon FBA may be interesting when:

• You mainly sell through Amazon.
• You have few sales channels.
• You need a fast solution without managing logistics.

A 3PL may be more cost-effective when:

• You sell through multiple channels.
• You need better cost control.
• Your catalogue is growing and you need flexibility.

The FBA vs 3PL comparison should include all expenses, not only shipping fees.

When is it worth switching to a 3PL to save money?

Many ecommerce businesses start with a simple solution and switch when logistics begins to slow down their growth.

A 3PL can help reduce costs when you need:

• Better inventory control.
• Processes adapted to your brand.
• Integrations with different platforms.
• More personalised management.

AMPHORA offers ecommerce fulfilment services and tools to control inventory, track orders and improve logistics productivity.

How to calculate your total logistics cost to make the best decision

To understand what is cheaper, FBA or 3PL, calculate the complete cost of your operation:

1. Storage costs.
2. Order preparation costs.
3. Shipping expenses.
4. Returns management.
5. Excess inventory costs.
6. Time spent managing logistics.

The lowest price is not always the best option. Efficient logistics should help you sell more, maintain healthy margins and adapt to your ecommerce growth.

The hybrid strategy: combining Amazon FBA and a 3PL

Some brands use both models to take advantage of their strengths.

For example, they can use Amazon FBA for marketplace orders and a 3PL for other channels such as their own online store, social media or additional marketplaces.

This model allows brands to maintain flexibility and avoid depending on a single logistics solution.

Choosing between Amazon FBA or 3PL depends on how your business works today and where you want it to grow. A logistics operation prepared to scale can become a competitive advantage for your ecommerce business.