The Valuation Sanity-Check

Sanity-check this valuation — tell me if the number is believable.

The valuation and how it was derived: [PASTE OR DESCRIBE, INC. METHOD AND
KEY ASSUMPTIONS]
The business: [DESCRIBE]

Pressure-test it:
1. Do the growth and margin assumptions imply something absurd at the end
   of the forecast (market share, size, profitability)?
2. Does the implied multiple pass a common-sense comparison?
3. Which single assumption is doing most of the work, and is it
   defensible?
4. What would a sceptical buyer or investor attack first?
5. A gut-check range and whether the headline number sits inside it

Tell me plainly if this looks optimistic, conservative, or reasonable, and
where the fragility is.