Last week, Amazon launched Amazon Supply Chain Services (ASCS) - a single platform that lets any business plug into Amazon’s freight, warehousing, fulfillment, and parcel network. You don’t have to sell on Amazon. You don’t even have to be in retail.

Within hours, UPS dropped about 10%, and FedEx fell roughly 9%.

If you run an e-commerce brand and use a 3PL, this one’s worth five minutes of your time.

Here’s what shifted

Before last week, Amazon’s shipping economics were locked behind a single door: sell on Amazon, use FBA. That door is now wide open. A Shopify-only brand can ship through Amazon’s network without listing a single SKU on the marketplace.

The reason it matters: Amazon’s per-shipment costs are dramatically lower than what UPS, FedEx, or any 3PL reselling their rates can offer.

The numbers I keep seeing

I track shipping cost data across multiple client accounts, and a clear pattern shows up. For one specific SKU — and we’ve matched this across hundreds of SKUs, multiple vendors, and hundreds of thousands of shipments - here’s the cost of moving the same physical box:

→ Amazon shipping its own 1P retail sale: $7

→ Amazon shipping it as a 3P FBA sale: $10.50

→ Same SKU via FedEx or UPS: ~$15

That gap has held inside FBA for years. The only thing that has just changed?

You don’t need to sell on Amazon to access it anymore.

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Why your 3PL is in trouble

Most 3PLs don’t own their shipping network. They buy parcel rates from FedEx, UPS, and USPS, then mark them up when they invoice you.

Amazon doesn’t have that problem. They own the planes, the trucks, the sortation hubs, and the last-mile vans. There’s no middleman to mark up.

A 3PL paying retail carrier rates simply cannot match a vertically integrated network on price. The math doesn’t allow it.

The standard 3PL pitch is also weaker now. For years, it’s been: “Diversify away from Amazon - don’t put everything in one basket.” That argument loses weight when Amazon can be your shipping vendor without being your sales channel.

What this does to your P&L

Outbound shipping eats 8–15% of revenue for most e-commerce brands. It’s spread across thousands of small charges that no one audits line by line. It feels fixed. It isn’t.

Quick math: shipping at 12% of revenue, trim 20% off that line, and you’ve added roughly 2.4 points of gross margin.

And the wild part? You didn’t have to launch a new product or hire a single person to get it. You just changed who ships your boxes.

What I’d do this week

Pull your recent 3PL invoices and look at what you’re actually paying for shipping.
Get a quote from ASCS at supplychain.amazon.com.
Compare the two.
If Amazon is cheaper, run a small pilot before switching.

The bigger picture

AWS didn’t kill the data center business overnight. It took ten years. But it permanently rewired which workloads ran where, and it flattened the mid-tier hosting providers competing on price alone.

The same is about to happen in fulfillment. Specialty 3PLs will survive. Generic ones are on a clock.

If your 3PL contract is up for renewal in the next 12 months, that conversation just got a lot more interesting.

Reprice accordingly.

If you want us to actually run this analysis on your business, DM me.

Strategic Thinking.

Amazon Is Coming for Your 3PL

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