MAP monitoring scope calculator: listings and checks per month
This calculator turns your priority part numbers and online dealers into the two units minimum advertised price (MAP) monitoring is counted in: listings and checks. A listing is one part number at one dealer. Checks are listings multiplied by how often each one is checked. It doesn’t estimate a price, and it can’t tell you whether any dealer advertises below MAP.
Key takeaways · if you read nothing else
- A listing is one part number at one dealer, so 25 priority part numbers across 5 dealers is at most 25 × 5 = 125 listings.
- Most dealers don’t carry every part, so listings = part numbers × the share a typical dealer lists × dealers, rounded per dealer.
- Checks per week = checkable listings × checks per listing per week: 1 for weekly, 2 for twice a week and 7 for daily.
- Checks per month use a 30-day month, so 125 listings checked daily is 125 × 30 = 3,750 checks a month.
- The calculator shows scope, not a price or a finding; a quote depends on the listings that actually exist and the review work they need.
On this page7 sections · calculator
Work out your monitoring scope
- Listings per dealer
- 25
- Listings
- 125
- Checkable listings
- 125
- Share of dealers that may not be checkable
- 0.0%
- Checks per week
- 875
- Checks per month
- 3,750
25 × 100% = 25 per dealer · 25 × 5 = 125 listings · 125 × 7 = 875 checks a week · 875 × 30 ÷ 7 = 3,750 a month
Scope preview: 25 part numbers across 5 dealers; 125 listings, 125 checkable.
Checks per month at other listed shares
| Frequency | 50% listed | 75% listed | 100% listed |
|---|---|---|---|
| Weekly | 279 | 407 | 536 |
| Twice a week | 557 | 814 | 1,071 |
| Daily | 1,950 | 2,850 | 3,750 (your inputs) |
| Input | What to enter | Default |
|---|---|---|
| Priority part numbers | The MPNs you’d most want watched, not your whole catalog | 25 |
| Online dealers | Independent dealer sites that sell those parts | 5 |
| Share a typical dealer lists | Your best guess at the percentage of those part numbers a typical dealer carries online. If you’re not sure, tick “Not sure” and the calculator uses 100% | 100% |
| Dealers we may not be able to check | Dealers you know show prices only after a login, or that you expect can’t be read | 0 |
| Check frequency | Weekly, twice a week or daily | Daily |
| Result | What it means |
|---|---|
| Listings per dealer | The part numbers a typical dealer lists, rounded to a whole listing |
| Listings | Listings per dealer × dealers |
| Checkable listings | Listings at the dealers that can be checked |
| Share of dealers that may not be checkable | Dealers we may not be able to check ÷ dealers |
| Checks per week | Checkable listings × checks per listing per week |
| Checks per month | Checks per week × 30 ÷ 7, rounded to a whole check |
How is monitoring scope calculated?
Scope is counted in listings, then multiplied by check frequency. Part numbers alone don’t describe the work, because the same part at five dealers is five product pages to match and check.
The calculator uses five steps and five letters. P is priority part numbers and D is dealers. L is the share of part numbers a typical dealer lists, as a percentage. U is dealers we may not be able to check, and f is checks per listing per week.
- Listings per dealer = P × L ÷ 100, rounded to the nearest whole listing (halves round up).
- Listings = listings per dealer × D.
- Checkable listings = listings per dealer × (D − U).
- Checks per week = checkable listings × f, where f is 1 for weekly, 2 for twice a week and 7 for daily.
- Checks per month = checks per week × 30 ÷ 7, rounded to the nearest whole check. For daily checks that’s simply checkable listings × 30.
The share of dealers that may not be checkable is U ÷ D, shown as a percentage to one decimal place.
If you’re not sure what share a typical dealer lists, the calculator uses 100%. Every result is then the most your scope could be, because no dealer can list more than all of your priority part numbers.
What do typical scopes look like?
Three examples show how the inputs move the result. They double as the calculator’s test cases.
Illustrative example: fictional scopes. Not a real manufacturer’s dealer network or a quote.
| Inputs | Listings | Checkable listings | Checks per week | Checks per month |
|---|---|---|---|---|
| 25 part numbers × 5 dealers, 100% listed, 0 uncheckable, daily | 25 × 5 = 125 | 125 | 125 × 7 = 875 | 125 × 30 = 3,750 |
| 100 part numbers × 30 dealers, 60% listed, 0 uncheckable, twice a week | 60 × 30 = 1,800 | 1,800 | 1,800 × 2 = 3,600 | 3,600 × 30 ÷ 7 = 15,429 |
| 40 part numbers × 12 dealers, 75% listed, 2 uncheckable, weekly | 30 × 12 = 360 | 30 × 10 = 300 | 300 × 1 = 300 | 300 × 30 ÷ 7 = 1,286 |
The first row is the scope used across our site: 125 listings, about 3,750 checks a month at daily frequency. Checked twice a week instead, the same 125 listings come to 250 checks a week, or 1,071 a month (250 × 30 ÷ 7).
The second row shows why the listed share matters. 100 × 30 is 3,000 possible listings, but if a typical dealer carries 60% of the parts, there are 1,800 to match and check.
The third row has 2 of 12 dealers that may not be checkable, 16.7% of the dealers. Their 60 listings stay in the listings count but drop out of the checks.
How does check frequency change the work?
Frequency multiplies everything. The same listings checked daily are 7 times the checks of weekly and 3.5 times the checks of twice a week.
| Frequency | Checks per listing per week | 125 listings: checks per week | 125 listings: checks per month |
|---|---|---|---|
| Weekly | 1 | 125 | 536 |
| Twice a week | 2 | 250 | 1,071 |
| Daily | 7 | 875 | 3,750 |
More frequent checks narrow the window in which a short promotion can appear and disappear unseen. They don’t close it: a price that changes between two checks appears in neither. How MAP pricing monitoring works covers what a check records and what it can miss.
Why do some dealers count as not checkable?
Some dealer sites can’t be checked as public advertised prices. We don’t bypass logins, CAPTCHAs or site rules, so a dealer that shows prices only after a login may be out of reach.
The calculator keeps those dealers’ listings in the listings total and leaves them out of checks, so you can see the gap before scope is agreed. You enter the number yourself; we don’t publish an expected share, because we don’t have measured data to base one on. The paid diagnostic is where it gets measured: it checks a small sample of your part numbers at a few dealers and tells us both whether your dealer network can be monitored reliably.
Once monitoring is running, a scheduled check that fails is different. It’s recorded with a reason and reported as could not check, never counted as a clean result. The sample report shows how coverage gaps appear.
What doesn’t the calculator tell you?
It doesn’t give a price, find dealers or say anything about how any dealer advertises. It’s arithmetic on the numbers you enter.
Not a price
Listings and frequency are what we price by. The pilot’s listing cap is set in writing for each pilot, and larger coverage is quoted once collection and review costs for your dealers are measured.
Not the real listing count
The listed share is your estimate. Which part numbers each dealer actually lists is only known after matching each one to the exact MPN and variant on your MAP sheet.
Not a finding
A scope says how many listings would be checked. It says nothing about whether any of them advertise below MAP.
Not a dealer list
It counts the dealers you enter. Price Axle monitors an agreed list of independent online dealer sites and doesn’t find unknown sellers or cover marketplaces.
A 30-day month
Months with 31 days have about 3% more checks (31 ÷ 30 = 1.033).
What drives a quote for MAP monitoring?
Two things set the size of the work: how many listings are checked and how often. Our pilot pricing is built on those two numbers, which is why every pilot has a written listing cap and check schedule.
The monitoring pilot is $349 a month, cancelable, with a written listing cap and check schedule. There’s also a small paid diagnostic, which checks a sample of your part numbers at a few dealers. For a scope bigger than a pilot, we quote once the collection and review work for your dealers is measured.
If you’re comparing providers, other tools price by products, URLs, checks or websites. Convert each quote to listings and checks per week, and compare MAP pricing software on coverage and accuracy with the same numbers. The guide to listings vs SKUs explains the unit in more depth, and the MAP monitoring cost guide works through budgets.
Is anything I enter saved?
No. The calculator runs in your browser. It doesn’t store or send what you type, and the results disappear when you leave the page.
If you’d like a scoped price, the assessment form asks for your part-number and dealer ranges separately. You choose what to send.
FAQ
Do failed checks count toward checks per month?
Yes. The calculator counts scheduled checks. A check is one attempt to record a listing’s advertised price, and an attempt that fails is still recorded and reported as could not check.
Should I count every part number in my catalog?
No. Enter your priority part numbers: the ones you’d most want watched. Monitoring a whole catalog is a different scope and multiplies every number on this page.