# Manual answer key
Synthetic teaching fixture; no real vendors or model results.
- AlderDesk: 5 seats × £24 = £120/month equivalent, annual commitment £1,440 excluding VAT.
- BirchCase: 4 × £32 = £128/month, monthly billing, excluding VAT.
- £8/month-equivalent difference is not an equivalent payment commitment.
- A3 is stale/unsupported for current pricing.
- A2 and B2 describe different capabilities. B2 is restricted private beta with unknown plan entitlement.
- B3 is a vendor claim without substantiation in the pack; no proven 40% saving.
- A4 = 24/5, not 24/7. B4 = unknown, not absent support.
- No overall winner without buyer priorities and missing checks.