A rate reseller's pitch is simple. They have negotiated rates with a carrier, they share a rate card, and the card shows you paying less than you pay today. On a spreadsheet it looks like free money.
The trouble is that a rate card is a price, not a program. The price is the easy part to show and the easy part to believe. What the reseller almost never accounts for is everything that determines whether that price actually holds up once it touches your business. We see the same three gaps over and over.
They ignore what it does to your warehouse
Adding a carrier is not a line-item change. It is an operational change, and it lands on the people working the floor.
When you bring on a new carrier, your team has to separate inventory into different stacks, figure out how to print labels across another system, and run separate workflows for each carrier they touch. A new pickup gets scheduled. A new set of edge cases gets learned. None of that shows up on the rate card, and the reseller selling you the card is rarely the one who has to make it work at 6am in the warehouse.
This is the same hidden cost behind the carrier dilution problem: every carrier you add carries real operational overhead, not zero. A reseller optimizing for the lowest rate per package has no reason to weigh that against the friction it creates, because the friction is not their problem to absorb. It is yours.
They don't verify delivery speed against your actual shipments
The second gap is performance. A reseller will tell you the carrier they are sourcing has delivery speeds equivalent to what you have now. On paper, in a coverage map, that can even be true.
But the proof is in your actual ZIP codes and your actual shipments. Equivalent average transit time across the country tells you very little about how a carrier performs on the lanes you ship most. Someone has to verify that the carrier is genuinely picking up and delivering packages at a speed that works for your customers, in the regions where your orders actually go. That means looking at real delivery data, not a marketing claim, which is the whole reason estimated delivery data is so easy to get wrong.
A slower carrier that saves you money on the rate card can quietly cost you far more in customer experience. A reseller is not measuring that, and usually cannot, because they do not have your performance data.
They don't confirm the savings actually materialize
The third gap is the one that does the most damage, because it goes to the heart of the pitch. A reseller promises something like fifteen percent savings, points at the rate card, and moves on. Two things they typically skip:
- The card is often a base rate. Real shipping costs are full of surcharges and accessorials: residential fees, delivery area surcharges, dimensional weight, fuel, peak. If the quoted savings are calculated off a clean base rate and your real invoices are loaded with surcharges, the headline number is overstated, sometimes badly.
- Pricing moves. Carriers raise rates and adjust surcharges. A card that beats your current cost today may not beat it in six months, and a projection that assumes today's prices forever is not a projection you can bank on.
The only honest way to know whether savings are real is to take the proposed rates and apply them to your actual shipment history, surcharges and all, then compare against what you actually paid on the same shipments. That is a like-for-like comparison at decision time, not a rate card held up next to a promise. If nobody is converting the card into your real, fully loaded cost, assume the savings are smaller than advertised.
What to do instead
None of this means a reseller's rate is bad. It means the rate card is the start of the analysis, not the end of it. Before you switch anything, get answers to three questions:
- What does this cost the warehouse? Name the operational overhead of the new carrier honestly, and decide whether the savings are worth the friction.
- How does it actually deliver on my lanes? Verify performance against your real shipments and ZIP codes, not a coverage claim.
- Do the savings survive my real invoices? Re-rate your own shipment history against the proposed card, surcharges included, and compare like-for-like.
This is exactly why we evaluate your data before recommending a change. A cheaper number on a card is not the same as a better program in practice, and the difference only shows up once you look at your own shipments.