What does one newsletter subscriber cost you per month?

Nobody sells subscribers by the subscriber

Newsletter platforms price by bracket, not by head. You don't pay a rate per subscriber; you pay a flat monthly fee for a bracket that holds up to some number of them. Divide the fee by your actual list and you get a real number — what each subscriber costs you per month — and it turns out to be one of the least stable figures on your bill. On Ghost, a list sitting exactly at the 1,000-subscriber ceiling of its Starter plan costs $15/month, or 1.50¢ per subscriber. One name later, at 1,001 subscribers, it costs $46/month on the Publisher (up to 2,500 members) plan — 4.60¢ per subscriber, roughly 3.1× the unit cost for a list that grew by one-tenth of one percent. (One caveat on that entry bracket: Ghost's Starter plan doesn't support paid subscriptions, so if you're charging readers, Ghost's ladder effectively begins at the Publisher tier.)

That shape repeats on every platform that prices by list size. Kit's free Newsletter plan carries 1,000 subscribers for $0; subscriber 1,001 puts the list on the Creator (up to 3,000 subs) plan at $49.17/month, or 4.91¢ each. Buttondown's Basic plan holds 1,000 for $9/month (0.90¢ each), and one past that is $29/month on Standard — 2.90¢ each. Figures are each platform's cheapest published billing option; the annual-versus-monthly difference is in annual vs monthly billing.

The most expensive subscriber you will ever add

It's the one that crosses a line, and it's expensive out of all proportion to itself. Further up Ghost's ladder the same thing happens with bigger numbers: a list at 10,000 subscribers pays $88/month (0.88¢ per subscriber), and at 10,001 it pays $141/month on the Publisher (up to 25,000 members) plan — 1.41¢ per subscriber. The extra $53/month buys headroom you mostly aren't using yet.

The mirror image is that the cheapest place to sit is the top of a bracket, where you're using every subscriber slot you're paying for. That's why unit cost isn't a curve that falls smoothly as you grow — it's a sawtooth that spikes at each boundary and then falls all the way across the bracket. Ghost's Publisher (up to 2,500 members) bracket is the clearest example: the same $46/month plan fee works out to 4.60¢ per subscriber at 1,001 members and 1.84¢ at 2,500. See the whole bill rather than the unit cost in what it costs to send to 10,000 subscribers.

Where the unit cost bottoms out

Scale does genuinely help, once you look past the sawtooth. Ghost's top published bracket holds 100,000 members for $274/month — 0.27¢ per subscriber, the lowest unit cost on any subscriber-priced ladder we can verify. Kit's published ladder ends at 95,000 subscribers at $515.83/month, or 0.54¢ each, with custom pricing above that. Buttondown's published plans stop at 20,000 subscribers, where its Advanced plan works out to 0.70¢ each.

Two platforms sit outside this arithmetic entirely. Substack charges no plan fee at any list size, so its cost per subscriber is $0 whether you have a hundred subscribers or 100,000 — it monetizes through its 10% cut of paid subscriptions instead, which is the trade examined in Substack fees explained. beehiiv's free Launch plan carries up to 2,500 subscribers at no plan cost, and above that bracket we don't publish a beehiiv per-subscriber figure, because its price-by-subscriber-count brackets haven't been verified directly. Head-to-head unit costs for the two fully-verified ladders are on Ghost vs Kit.

What to do with the number

The practical use is deciding what an unengaged subscriber is worth. Inside a bracket, one more name costs nothing — the plan fee doesn't move, so pruning a few hundred dead addresses saves nothing either. The number only matters near a boundary. A Ghost list at 10,500 members pays $141/month, $53/month more than the same newsletter at 10,000 — so those 500 subscribers cost $636/year between them. If they open nothing and buy nothing, that's a real expense with a real answer; if a handful of them convert, it isn't.

The other use is planning. Because the jumps are steps, the honest question before a growth push isn't "what will this cost per subscriber" but "which line am I about to cross, and what's on the other side of it." Check yours against the ladder in the calculator, and compare the profiles for Ghost, Kit, and Buttondown directly. The revenue-side companion to this piece — what your subscription price does to your fees — is does your subscription price change what you pay in fees. Every figure here is computed from published pricing verified as of 2026-08-04, with sources on the methodology page.

Frequently asked questions