Short answer: If you run several social accounts, a flat monthly euro price is usually easier and often cheaper than per-channel tools. Count the accounts you actually post from, multiply the per-channel fee, then compare to a single Solo or Pro plan. For many UK and Irish operators, the flat plan wins once you pass three or four channels.
Who this is for
Busy UK and Irish owner-operators who already know they need Instagram and TikTok (and maybe Facebook or LinkedIn), and who hate surprise meters at renewal time.
The simple maths
Take a common per-channel band: about $5 per channel per month on Buffer Essentials (their public pricing, checked 10 Aug 2026).
- 3 channels ≈ $15/mo
- 5 channels ≈ $25/mo
- 10 channels ≈ $50/mo
PostOnce Solo is €15/month for up to 10 accounts. Pro is €30/month for larger account counts and team seats. Built by Lucro Limited in Ireland. Annual Solo is €144/year.
So at five or ten channels, flat euro pricing is not a slogan. It is the spreadsheet result.
What you should still check
- Does the tool actually publish to the networks you need (especially Instagram and TikTok)?
- Do you get clear status when something fails?
- Is the list price honest on the marketing site and in the app?
A cheap per-channel plan that fails half your posts is not cheap.
Where PostOnce fits
PostOnce is built for write once, publish to the accounts you run, with a calm queue and flat euro plans. We do not lead with AI autopilot or enterprise listening. We lead with posts that go live.
Open signup includes a 7-day free trial. Start free trial.
On annual checkout, code FOUNDER is 50% off year one until 31 August 2026 (Solo €72 / Pro €150 that first year, then normal renew). Monthly stays €15 / €30.
FAQ
Is Buffer bad?
No. Buffer is a solid product. Per-channel pricing just scales differently. If you stay on one or two channels forever, their model can still fit.
Does flat pricing mean unlimited everything?
No. Plans still have account and seat limits. Read the plan page. Flat means you are not charged again for each extra network inside that plan's account cap.
Can I try before I pay?
Yes. Start the free trial, connect Instagram or TikTok, publish one real post, then decide.
Next step
Start free trial · or read PostOnce vs Buffer and PostOnce vs Metricool.