Every "self-hosting saves you thousands" post pulls the same two moves: it quotes the most expensive SaaS tier it can find, then pretends the server you run the open-source replacement on is free. Both of those are lies of omission, and they make the whole genre hard to trust.
So I did the boring version. I opened the actual pricing page for 10 popular SaaS tools in June 2026, wrote down the cheapest plan that honestly matches what the open-source equivalent does, and put it next to what it costs to run that open-source app on a flat monthly pod. No cherry-picked tiers, no hand-waving about hosting.
The short answer
Self-hosting the open-source version of a typical SaaS tool runs about $36 to $84 a year in hosting. The software itself is free and open source, so the honest framing is "$0 software plus a hosting bill." The commercial equivalents come in at a median of roughly $138 a year per tool, and a lot more once they start billing per seat, per host, or per task.
But that median hides the interesting part. For 3 of these 10 apps, self-hosting actually costs more at small scale. I'm going to show you exactly which, because that's the whole point of doing the math instead of repeating a slogan.
How I measured it
A few ground rules so the comparison is fair:
- All prices are USD list price, billed annually, checked against each vendor's own pricing page in June 2026.
- The SaaS number is the cheapest plan that reasonably matches the open-source tool's feature set, at one unit (one user, one host, or one channel) unless I say otherwise.
- The self-host number is the flat plan the app actually needs: $3/mo ($36/yr), $7/mo ($84/yr), or $15/mo ($180/yr). That's the hosting bill, full stop. SSL, a subdomain, SSH, a web terminal, and bandwidth are included; the app is free.
- Where a SaaS tool bills per seat or per host, I note how it scales, because that's where flat pricing pulls away hard.
The 10-app comparison
| Self-hosted app | Replaces | Basis | SaaS / year | Self-host / year | Verdict |
|---|---|---|---|---|---|
| n8n | Zapier (Professional) | 1 user, task-metered | $240 | $84 | Cheaper, and far more so as task volume grows |
| Beszel | Datadog (Infra Pro) | per host | $180/host | $36 | Far cheaper, one pod watches many servers (5 hosts on Datadog = $900/yr) |
| Uptime Kuma | Pingdom | entry, 10 checks | $198 | $36 | Cheaper (note: UptimeRobot is $108/yr with a free 50-monitor tier) |
| Stirling PDF | Adobe Acrobat Standard | 1 user | $156 | $84 | Cheaper (Acrobat Pro is $240/yr) |
| Fider | Canny (Core) | flat entry | $228 | $36 | Much cheaper |
| Memos | Notion (Plus) | 1 seat | $120 | $36 | Cheaper |
| Excalidraw | Excalidraw+ | 1 editor | $72 | $36 | Cheaper (Miro Starter is $96/seat/yr) |
| Vaultwarden | Bitwarden Families | up to 6 people | $48 | $36 | Roughly a wash, do it for ownership not savings |
| AFFiNE | Notion (Plus) | 1 seat | $120 | $180 | Costs more solo; wins for a team of 2+ |
| Postiz | Buffer (Essentials) | 1 channel | $60 | $180 | Costs more for 1-2 channels; wins at ~4+ |
Median commercial tool: ~$138/year. Median to self-host: ~$36/year. Nice gap, but the median isn't the lesson. The lesson is how SaaS bills you.
Where self-hosting wins big
The headline price barely matters. What matters is pricing that scales with your usage while your hosting bill stays flat:
- Per host (Datadog). Datadog Infrastructure Pro is $15 per host per month. Monitor 5 servers and that's $900 a year. Beszel watches all 5 from a single $3/mo pod. The more servers you run, the more absurd the gap gets.
- Per seat (Hootsuite, Notion, Miro). Hootsuite Standard is $99 per user per month. That's $1,188 a year for one seat and $5,940 for five. A flat self-hosted tool does not care how many people log in.
- Per task (Zapier). Zapier's entry plan is $240 a year for a low task cap, and heavy automation walks you up the tiers fast. Self-hosted n8n runs unlimited executions on a $7/mo pod.
If your usage grows in any of those dimensions, flat pricing wins by a mile and keeps winning.
Where it doesn't (the part nobody admits)
Self-hosting is not free money everywhere. Three apps in this list cost more than their SaaS rival at small scale, and pretending otherwise is exactly how these posts lose credibility:
- Postiz vs Buffer. Postiz needs a $15/mo pod, so $180 a year. Buffer is $60 a year for one channel. For 1 or 2 channels, Buffer is straight-up cheaper. Postiz only pulls ahead once you're managing roughly 4 or more channels, or comparing against a per-seat tool like Hootsuite.
- AFFiNE vs Notion. AFFiNE also wants a $15/mo pod. Notion Plus is $120 a year for one seat. Solo, Notion is cheaper. AFFiNE wins for a team, because it's flat while Notion bills per head, so the math flips somewhere around the second or third user.
- Vaultwarden vs a password manager. A $3/mo pod is $36 a year. Bitwarden Families is $48 a year, and an individual Bitwarden Premium plan is about $20. On price alone this is a wash at best. You self-host a password vault to own your data, not to shave a few dollars.
None of these are dealbreakers. They're just honest. If someone tells you self-hosting is always cheaper, they didn't check Postiz, AFFiNE, or Vaultwarden.
Quick FAQ
Is self-hosting actually cheaper than SaaS?
For tools that meter by host, seat, or task, yes, often by a wide margin once you scale. For cheap single-user tools it's roughly break-even, and the real win there is flat pricing and owning your data, not raw savings.
Why do n8n, AFFiNE, and Postiz cost more than $3/mo to host?
They need more memory than the $3 plan provides, so they run on the $7 or $15 plan. The lightweight apps (Beszel, Uptime Kuma, Memos, Fider, Excalidraw, Vaultwarden) all fit fine on the $3 plan.
Do I need DevOps chops to run these?
No. They deploy as 1-click apps and come up with a live URL, HTTPS, and a subdomain. You don't touch nginx, certs, or a build pipeline.
Are these prices going to drift?
SaaS pricing moves constantly. Everything here was verified against the vendors' own pages in June 2026. Treat the relative picture as the takeaway, not the exact dollar two years from now.
I kept the per-tool breakdown short here. If you want the full math, including how each SaaS plan was picked and where the break-even point lands for the per-seat tools, the complete per-tool math is in the original study.
And if you just want to try one of these without the server setup, you can deploy your first app from $3/mo flat. Flat plan, free open-source software, live URL in seconds.
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