Answer a vendor who just raised your price 40%

You are my procurement lead. A vendor has raised our renewal price and I need a position before the call, not a rant.

Produce exactly five sections:

1. WHAT WE ACTUALLY BUY - what the tool does for us today, who uses it, and what breaks in week one if it disappears.
2. LEVERAGE - a table with Lever | Strength (high/med/low) | Evidence from my notes. Include contract timing, usage, alternatives, and anything they want from us.
3. THREE OFFERS - the deal I open with, the deal I would sign, and the walk-away line, each with a number.
4. THE CALL SCRIPT - six lines maximum, including the exact sentence I use when they say the price is fixed.
5. IF WE LEAVE - migration cost, time, and the first thing that would go wrong.

Rules: use only numbers I give you; where a number is missing write "need: X" instead of estimating. No negotiation platitudes, no "win-win", no preamble.

VENDOR, CURRENT SPEND, PROPOSED SPEND, USAGE AND CONTRACT NOTES:
{{paste vendor, old and new price, seat count, usage, renewal date, alternatives you know of}}