Amazon Shipping is quietly undercutting FedEx, UPS, and even the Postal Service. The rate is real. The harder question is what you trade for it, and almost nobody is costing that out.

Start with the facts, because they are not in dispute. Amazon opened its parcel network to all businesses this year, not just sellers on its marketplace, and it has been pricing aggressively to win volume. Supply Chain Dive reported this month that the pricing experts who negotiate these contracts are seeing proposals at or below FedEx and UPS, built on transparent rates with no residential surcharges and no weekend delivery fees. The logistics data platform Loop is seeing clients save up to $6 per package on eligible residential volume. In one case, Amazon covered more than 90 percent of a retailer’s distribution and beat FedEx by better than 30 percent on it. On packages under a pound, Amazon is even undercutting USPS, a lane the Postal Service has owned on price for years.

That is a genuine disruption, and the market is treating it as one. FedEx and UPS shares slid after a Morgan Stanley analyst warned clients that Amazon’s growing delivery reach threatens both carriers. If you ship lightweight residential parcels, you owe it to your P&L to get a proposal. This is not a piece about avoiding Amazon Shipping.

It is a piece about costing out the whole thing, because the rate proposal is the cheapest part of the decision. And on one of these costs, I am not guessing. I have watched Amazon run this same play before. Here is what the rate sheet does not show.

The data you hand over

Every carrier sees your shipments. Only one of them also competes with you.

Amazon is your carrier and, for a large share of shippers, your marketplace, your competitor, and your private-label rival, all at once. Routing volume through Amazon Shipping means your shipping data, what you send, where, how often, in what quantities, to which doorsteps, sits with a company that also sells against you. Whether and how that data is ever used is not the question. The structural exposure is. No other carrier puts you in that position, because no other carrier is also a retailer.

The entry price is not the exit price

I watched this happen once already. When I was running a national 3PL’s parcel solution across a book of shippers, I saw Amazon make a hard early run at sub-one-pound volume, the exact lane it is undercutting USPS in today, and then, once the volume had moved, raise the rate and cap how much of a shipper’s book could sit below a pound. The bargain that pulled the freight in did not stay the bargain.

That is how penetration pricing works, and the people negotiating today’s deals say it plainly: the aggressive pricing may not last. You win the volume with a rate. Once the volume is committed and the fulfillment is rebuilt around it, the leverage moves to the other side of the table. The rate you sign and the rate you keep are two different numbers, and the steeper the entry discount, the further a reversion has to travel.

It is a segment, not a network

Amazon Shipping is two-to-five-day ground in the contiguous United States. No overnight. No express. It is built for lightweight, non-urgent, residential parcels, and it is good at exactly that.

Which means it solves a slice of your book, not the whole thing. Your time-critical shipments, your commercial deliveries, your express lanes, and anything outside the contiguous states still need another carrier. You are not replacing your mix. You are adding a lane to it, and the savings on that lane have to be weighed against the volume you pull out of your incumbent agreements to feed it, which can soften the rates on everything else.

One counterparty wearing four hats

Put those together and the real issue comes into focus. With Amazon, a single company can be your carrier, your cloud provider, your selling channel, and your competitor at the same time. Concentration and conflict, in one relationship.

Diversification has always been a rate hedge. Here it is also a leverage hedge and a risk hedge. The more of your fulfillment that runs through one counterparty, the less room you have to move when terms change, and the more that counterparty learns about your business while competing with it.

Read the contract like any other

The best guidance in the trade reporting is also the simplest: negotiate with Amazon the way you would with UPS or FedEx. Get the commitments, the service levels, and the rate-change language in writing. Fewer surcharges is not fewer terms to pin down. And Amazon is asking for volume commitments, so treat that commitment as what it is, capacity you are moving off another carrier, and price the whole board rather than just the new lane.

The bottom line

The disruption is real. The savings can be real. And none of that answers the strategic question, because Amazon Shipping is the only carrier decision that is also a competitor decision and a platform decision.

So evaluate it the way you would evaluate any carrier, on delivered cost and delivered performance. Then ask the questions no other carrier forces on you. Use it where it wins, on the segment it was built for, without betting your model on it.

Takeaway: The rate proposal is the easy part. The strategic cost is the part nobody puts on the page.

If you have looked at Amazon Shipping, what drove the decision, the savings or the strategic questions? I would like to hear how others are weighing it.