How we source our numbers

Every number on this site is either stated by a vendor, calculated by us from vendor-stated inputs, or marked as not measured. This page explains which is which, the cost model behind every listing, how corrections work, and how often we recheck a source.

Three evidence levels

Vendor stated

Taken directly from a vendor's own pricing page, docs, or terms. Shown in gray with a link to the page and the date we read it.

Our arithmetic

Calculated by us from vendor-stated inputs, such as year-one cost from seat price, seat count, months, and fees. Shown in pink with an underline.

Not measured

Neither the vendor states this number nor have we tested it ourselves. Recorded as "not stated," with a link to the page we checked and found nothing.

Cost model

Every tool is compared the same way: a ten-person team, twelve months, on the cheapest tier that includes pipeline reporting and multi-user permissions.

Team size	10 seats
Period	12 months
Tier	Cheapest tier that includes pipeline reporting and multi-user permissions
Billing	Monthly where offered; we also record the annual price
One-time fees	Included in year 1, excluded from year 2
Tax	Excluded
Currency	USD

The arithmetic behind the two calculated fields on every tool page:

real_cost_year1 = tier_price_per_seat
                × max(seats_needed, seat_minimum)
                × 12
                + one_time_fees

multiple_vs_sticker = real_cost_year1
                    ÷ (sticker_price_per_seat × seats_needed × 12)

seats_needed is fixed at 10. If a vendor does not state a seat minimum, we record "not stated" and treat it as 10 for the calculation. That assumption is noted next to the number it affects. We never publish only a total; every cost table shows each line the total is built from.

Correction policy

Prices change. When a published number turns out wrong, outdated, or stated differently by the vendor, we do not edit the original figure in place. We add a dated entry to that page's correction log instead. Where a tool or article page has corrections, they appear at the bottom of the page under "Corrections."

Recheck schedule

Every source has a date we read it. After 180 days without a fresh read, a page is due for a recheck: going back to the vendor's page, confirming or updating the number, and recording the new read date. Pages waiting on a recheck are not removed or hidden. They stay live with their last confirmed numbers until we get to them.