INSTRUMENTS / COMMITMENT CALCULATOR
Constructed exampleFollow the cost through time.
Compare two scenarios over the same duration. Keep every assumption in view.
TWO SCENARIOS / ONE SHARED HORIZON / CONSTRUCTED USD
Read the investigation →01 / THE UNIT
Set the assumptions.
02 / THE COMMITMENT
One price. A longer view.
SCENARIO A 15 seats
$4,320$24 × 15 × 12 monthsSCENARIO B 10 seats
$2,880$24 × 10 × 12 monthsA $4,320 B $2,880
$1,440 less in scenario B over 12 months.
The unit price is only the beginning.
Name the seats. Name the time.
Save this experiment
MODEL & LIMITS
What the total cannot tell us
This is subscription spend under fixed assumptions. It leaves out the value of the service, how many seats are used, and the cost of getting started or leaving.
- PriceUSD / seat / month
- SeatsEvery billed seat
- TimeThe same duration
Inspect the calculation and monthly values
Spend = price in cents × billed seats × months. All calculations use whole cents; the same model powers the homepage, investigation, tool and saved records. Scenario B − scenario A = -$1,440.
| Month | Scenario A | Scenario B | B − A |
|---|---|---|---|
| 0 | $0 | $0 | $0 |
| 1 | $360 | $240 | -$120 |
| 2 | $720 | $480 | -$240 |
| 3 | $1,080 | $720 | -$360 |
| 4 | $1,440 | $960 | -$480 |
| 5 | $1,800 | $1,200 | -$600 |
| 6 | $2,160 | $1,440 | -$720 |
| 7 | $2,520 | $1,680 | -$840 |
| 8 | $2,880 | $1,920 | -$960 |
| 9 | $3,240 | $2,160 | -$1,080 |
| 10 | $3,600 | $2,400 | -$1,200 |
| 11 | $3,960 | $2,640 | -$1,320 |
| 12 | $4,320 | $2,880 | -$1,440 |
Assumptions, source and evidence status
Original constructed teaching model: constructed-subscription-v1. These amounts are supplied examples, not market prices or observed billing data. The formula is repeated addition of the same monthly charge.
- Constant monthly price; every selected seat is billed for every month.
- Constructed USD scenarios, not a quotation, invoice or forecast.
- Excludes tax, discounts, annual billing changes, usage charges, implementation, training and switching costs.
Model bounds: USD 0–1,000,000 per seat per month; 0–100,000 seats; 0–120 months. Shared currency and duration are required for saved total comparisons. No exchange rates or financial forecasts are used.
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