Build a comparison table from several quotes

Compare these quotes on a common basis.

1. **Normalize the line items.** Vendors bundle differently. Build one row per thing-being-bought and map each quote's items onto it. *Comparing totals before doing this is the most common mistake and it favors whoever bundled most aggressively.*
2. **Present in one but not others** — mark these clearly. Usually the whole story: one vendor included something the others will charge for later.
3. **Absent from all** — what my stated need requires that nobody quoted. These become change orders.
4. Comparison table: item / vendor A / vendor B / … / note.
5. Terms that affect real cost but sit outside the total: payment schedule, what triggers extra charges, revision limits, timeline penalties, what happens if scope changes.

Then:
- **Adjusted totals** — each quote normalized to the same scope, with what you added or removed to get there.
- Questions to ask each vendor before deciding.
- Where a quote is cheap because it excludes something, and where it is expensive because it includes something real.

Rules:
- *Do not estimate a price for an item a vendor did not quote.* Mark it "not quoted" — that is the finding.
- Quote the vendor's own wording where an item is ambiguous.
- Do not recommend a winner on price alone. Say what each is trading.