Disclaimer first: the editor is hypothetical — one freelancer shipping social cuts and client deliverables weekly. The prices are real market prices for the kind of extensions editors actually buy. The point is the math.
What they rent today
The extension shelf: small subscriptions and one-off purchases that quietly became a monthly stack:
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01
Auto-subtitle / captioning extension
Subscription, per editor ≈ €20–€29/mo. Great tool. The price renews whether you edited last month or not.
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02
Upscaling / format conversion pack
Another ≈ €15–€25/mo, or a €200+ perpetual license for a version that stops receiving updates when the host app moves.
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03
Asset & template subscriptions
Stock motion, LUTs, sound libraries ≈ €15–€30/mo. Renewal is automatic; usage isn't. Most shelves carry at least two dormant subscriptions.
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04
The version-breakage tax
Every host-app update risks breaking the shelf; every broken extension costs an afternoon of hunting for alternatives. One breakage per quarter ≈ €150/quarter of billable time burned.
Itemized: €25 + €20 + €22 + breakage ≈ €67/mo plus surprise downtime, or €800+/year for tools that don't know your workflow.
What the owned shelf costs
One flat build: €290 for the automation tier. A batch pipeline that does the boring 80% outside the editor — watch a folder, transcribe, caption to spec, convert, upscale, file by project — with the creative 20% staying in the editor where it belongs. Built once. Runs on your machine or your server. No per-seat anything.
And the ownership delta is the whole story here: a plugin vendor decides when their tool breaks and whether your workflow gets a feature. Your own pipeline breaks only when your machine changes — and when you want it smarter, you (or I) edit the script that afternoon. It's your code; the roadmap is a sticky note on your own desk.
The crossover month
€290 build ÷ €67/mo ≈ month 5 — faster if one breakage gets avoided, because a single saved afternoon is €100+ back.
When renting still wins
If you live inside bleeding-edge AI features that only a big vendor can ship, rent those specific pieces. Own the boring high-volume pieces. The shelf only loses when you buy it piece by piece on autopilot.