Amazon Seller Metrics: What Normal Weekly and Monthly Growth Looks Like

Most guides to Amazon seller metrics list what to track: sales, units, sessions, conversion, advertising cost. The question a brand asks on a Monday morning is a different one. Sales rose 3% last week. Is that good? It is hard to answer from outside an account, because published benchmarks average together sellers who have nothing in common with yours.

We publish our own numbers, so here they are in one place: 26 weeks and 20 months from Amazon accounts we manage, and what each says about reading your own. One distinction first. The metrics Amazon judges an account on, the order defect rate and the rest of account health, are a separate set. This is about the sales metrics a brand judges itself on.

The months are the 20 comparisons of one calendar month with the next in our published case studies, taken from Seller Central's Sales Dashboard: ordered product sales, order items and units, with the days in each month stated. The weeks are 26 distinct weeks from the posts on our LinkedIn page between 28 July and 28 October 2026, reporting shipped revenue and shipped units for three brands at a time. A week posted twice is counted once.

The catch is selection. Every week we posted was a growth week, and every case study is a result we chose to publish. Read these as what a good week or month looks like when the work is going right, not as the average seller's. Flat and falling weeks happen in every account, ours included, and a sudden fall is a reason to check whether something has broken before deciding it is a trend.

The middle of our 26 weeks grew 4.45%. Half grew less than that, and 22 of the 26 grew less than 10%. The ten weeks in which an account shipped more than $300,000 were steadier still: the middle of them grew 3.7%, the smallest 1.18% and the largest 12.53%.

Of the four weeks above 10%, two grew about 13% on large accounts and two about 39%, both on accounts shipping about $45,000 a week. A small account moves further on less: a few large orders, one listing back in stock or one deal can add a third to a week that a large account would barely notice.

So a 2% week on an account shipping half a million dollars is a good week, and the same 2% on one shipping $20,000 is noise. Read a week against the four before it rather than against a number from elsewhere, and against the same week last year once there is one, because Prime Day, the back to school weeks and the fourth quarter move every account at once.

In 10 of the 26 weeks shipped revenue and shipped units moved more than three points apart. In five of them units fell while revenue rose: one account grew revenue 2.46% while shipping 5.47% fewer units. In four it went the other way, units growing faster, as in a week with 9.08% more units for 2.00% more revenue.

Neither is good or bad on its own. Revenue ahead of units means each unit sold for more: a price rise, a coupon or deal ending, or the mix moving toward dearer products or larger packs. Units ahead of revenue is the reverse, often a promotion doing its job. What matters is whether the margin held, which no sales report says. That is the gap Amazon's profit analytics leaves open and per-unit economics closes.

Across the 20 month comparisons the middle month grew about 28%. That middle hides the pattern that matters, which is the size of the month the account started from.

Under $50,000 a month: five months, four of which grew by between 196% and 411%. Each of the four started from a month under $35,000, one of them an account recovering from suppression.

$50,000 to $150,000: nine months, growing between 11.47% and 66.38%, the middle one 28.49%.

$150,000 to $300,000: two months, growing 9.82% and 27.15%.

Over $300,000: four months, growing between 1.48% and 19.54%.

A triple-digit month says the account started low, not that the work was three times better, and anyone quoting one as typical is quoting a small base. At half a million dollars a month, a month in the teens is a strong month.

February has 28 days and March 31, so March sells about 10.7% more on the calendar alone. January to February takes about 9.7% away, and a 31-day month after a 30-day one adds 3.3%. Five of our 20 comparisons are February against March. One of them grew 13.80% on the month and about 2.8% a day: three extra days were most of it. Going the other way, a January to February comparison grew 1.48% on the month and 12.35% a day.

So we compare months by their daily rate, and our case studies state both. A monthly read of Seller Central's reports that compares totals across months of different lengths will flatter March and punish February every year.

Sales are orders multiplied by what each order is worth, and the two tell different stories. In half of the 20 months order items grew faster than sales, and in the other half slower. Of the 13 months that report average sales per order item, six rose, six fell and one held at 0.07%. Where it fell it never fell by more than 5.19%; where it rose it rose by between 3.14% and 19.74%.

In most of our months, then, growth came from more orders rather than bigger ones. That is the usual shape when work on a listing or its traffic is paying off: more shoppers buying, the subject of what a good conversion rate looks like. A rise in order value is a bundle, a multipack or a price change at work, and is worth reading on its own because it is a different lever with different costs.

Our practice, for any account's Monday read and its month end:

Daily rate first. Divide by the days before comparing months.

Size before percentage. Compare with accounts of a similar size or, better, with the account's own last four weeks.

Revenue, units and orders together. A gap between them is a question about price, mix or promotion.

Order value on its own. It is a different lever from volume.

The calendar. Promotions, Prime Day, the fourth quarter, and the same week last year.

That weekly and monthly read is part of how we run an Amazon account for a brand, and every figure above comes from it.