A day pass looks cheap until you multiply it by your real desk days; a membership looks expensive until you count its included days. One arithmetic line decides which side of that trade you are on.
Employment-model comparisons price salary against contracting. This register prices workspace instead: each plan under one unified formula at your supplied monthly desk-day count, then the spread between the cheapest and costliest. It does not verify plan terms or model travel time.
A membership's fee only means something at a stated number of desk days, and so does a pass price. Quoting either plan without your attendance figure is a comparison of marketing, not cost. Fix the desk-day number first and treat every other figure as a sensitivity check.
Included-day allowances feel like capacity until attendance crosses them; beyond that line the per-day overage can exceed the walk-up pass price. The register applies overage mechanically, but only if the included-days figure you entered is the real allowance — check whether 'days' means bookings, credits or calendar days in the plan terms.
Price is one axis. A plan that cannot guarantee a desk on your days, or locks you into a twelve-month term, changes the effective decision. Use the spread to size the price stakes, then let verified terms — not the arithmetic alone — choose.
From the provider's price sheet record the day-pass price, the monthly fee, how many days the fee includes, and the charge per extra day. Where a plan has no concept of one part — no overage, no pass — enter zero rather than leaving a guess. Keep the source page or PDF privately for verification.
Count the days per month you would actually attend, from your own diary or booking history rather than your aspirations. Whole days only; a half day is either a full day's charge or a fraction you decide once and apply consistently outside the tool. Re-run with a lower and a higher figure if your attendance genuinely varies.
Cost = desk days × pass price + monthly fee + max(desk days − included days, 0) × overage. The register applies that identical formula to every row so no plan gets a friendlier reading. Included-but-unused days cost their fee; overage starts only beyond the included allowance.
The summary spread tells you how much the choice is worth per month at your attendance; if it is small, non-price factors legitimately decide. Before acting, verify cancellation terms, booking guarantees and any minimum term — a cheaper plan you cannot leave is a different product. Ask the provider to confirm the quoted parts in writing.
| Question | Before | Inspect this instead |
|---|---|---|
| Comparing headline fees at someone else's attendance | A membership's fee only means something at a stated number of desk days, and so does a pass price. Quoting either plan without your attendance figure is a comparison of marketing, not cost. Fix the desk-day number first and treat every other figure as a sensitivity check. | Pin down your real desk days |
| Forgetting overage beyond included days | Included-day allowances feel like capacity until attendance crosses them; beyond that line the per-day overage can exceed the walk-up pass price. The register applies overage mechanically, but only if the included-days figure you entered is the real allowance — check whether 'days' means bookings, credits or calendar days in the plan terms. | Let one formula do every plan |
| Treating the cheapest row as the decision | Price is one axis. A plan that cannot guarantee a desk on your days, or locks you into a twelve-month term, changes the effective decision. Use the spread to size the price stakes, then let verified terms — not the arithmetic alone — choose. | Read the spread, then the fine print |
This plan-cost register replaces a manual count or calculation, not source verification or the responsible person’s review.
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HYPOTHESIS / PROTOTYPE — checkout unavailable. Calculation is local. A draft is saved automatically in this browser profile when storage is available; Reset to sample clears it. Optional Pro history stores only five summaries and has its own deletion control. State links encode your inputs and can remain in browser history, clipboard or recipients’ records; share only non-sensitive rows. Optional external AI formatting leaves this device. The required site analytics beacon reports page activity; shared URLs contain encoded inputs. Do not treat an encoded URL as private. The calculator has no input-collection endpoint.
Price arithmetic on reader-supplied plan figures only, not a quote, offer or verification of any provider's terms. Confirm current prices, taxes, cancellation and minimum terms directly with the provider before committing.
Data note: The plan-cost register processes Plan code | day-pass price | monthly fee | days included | overage per extra day locally. Starter/sample selection and Run compute in this tab; no input is sent by the calculator. A local draft may be saved; explicit state-link sharing or optional external AI formatting can disclose inputs. Use non-sensitive labels.
The article demo above runs without limits. The companion app keeps a local history, exports the rows as CSV, prints the plan-cost register reading, and holds your drafts on this device — one complete free app run; the proposed $4 one-time filing layer is not for sale.
The plan-cost register answer stays complete for free. The proposed $4 one-time filing layer adds row CSV, print and five local reading summaries, not hidden answers. Checkout is unavailable; the article demo remains unlimited.
Open the plan-cost register companionPrice arithmetic on reader-supplied plan figures only, not a quote, offer or verification of any provider's terms. Confirm current prices, taxes, cancellation and minimum terms directly with the provider before committing.
Before: plans were compared by their headline fees. After: every plan is costed at the same real desk-day count and the spread speaks.
Pay-as-you-go | 14 | 0 | 0 | 0 Membership | 0 | 95 | 8 | 9
Setting: Desk days per month (whole days) = 12. Expected summary: 37 monthly currency units.
At twelve desk days the pass plan costs 12 × 14 = 168. The membership costs its 95 fee plus four extra days at 9 each, 128 − 95 + 36 = 131. The register reports the spread between plans, 37, and marks the costlier row. Included days that go unused in a membership are still paid for; the formula never refunds them.
Membership A | 0 | 120 | 20 | 0 Membership B | 0 | 80 | 6 | 10
Setting: Desk days per month (whole days) = 12. Expected summary: 20 monthly currency units.
Membership A covers twelve days inside its twenty included days, so its cost stays at the flat 120 fee. Membership B's cheaper fee is overtaken by overage: 80 + 6 × 10 = 140. The spread is 20 in favour of the nominally more expensive plan — a demonstration that the fee alone is not the comparison.
Plan X | 10 | 0 | 0 | 0 Plan Y | 0 | 120 | 0 | 0
Setting: Desk days per month (whole days) = 12. Expected summary: 0 monthly currency units.
Both plans land exactly on 120 at twelve days, so the spread is zero and neither row is marked. An exact tie means there is no cheapest plan on price alone; non-price factors you supply must decide. Ties are reported as ties, not broken by row order.
Manual entry completes this plan-cost register for free without signup. If available to you, the free AI Studio interface linked in the sources may format fictional or non-sensitive notes; external access may require an account. No API key or AI call is built into this tool. Free-tier content may be used to improve products. Review each cell and transcribe it to the labeled row schema; do not paste the JSON object into the row box.
Format only these fictional or non-sensitive notes for a plan-cost register. Return strict JSON shaped as {"rows": [{"label": "string", "cells": ["string", "string", "string", "string"]}], "setting": "string"}. The columns are Plan code | day-pass price | monthly fee | days included | overage per extra day; the setting is Desk days per month (whole days). Keep all supplied strings and quantities exactly; do not calculate, infer missing entries, invent dates or add advice. If any required value is missing, return an empty rows array and ask me for it separately. I will verify every cell against my source and manually transcribe rows using vertical bars before running the local calculator.An AI response is not executed, fetched or trusted as a result. Missing values remain questions; the strict local parser checks the rows you actually enter.