A lower number can describe a smaller job
A quote can look cheaper because it omits an assessment, a required quantity or another mandatory part of the same task. Adding the visible lines gives a known subtotal. It does not produce a complete comparable total while a mandatory item remains unknown. UNKNOWN is not zero.
Use one work definition
Give both suppliers the same configuration and stage. Name the deliverable, quantity, unit of purchase, included work, exclusions and acceptance output. In the R2 worksheet, keep mandatory, optional and non-equivalent lines separate. A separately priced walkthrough may help the family, but it cannot silently replace a preliminary assessment.
A practical comparison
Imagine one offer includes the named assessment and the other lists only a handover visit. The second total may be arithmetically correct and still be non-comparable. Mark the missing assessment and ask the responsible supplier to clarify it. Do not copy the first supplier’s price into the gap or assume the service is free. Preserve the answer with its source and date.
Check quantities and changes
An equipment price per unit is not a line total for several units. Tax, availability and work-specific charges can change the decision. After a configuration change, review the procurement sheet and the work/family copies affected by it. An old quote for a different configuration is useful history, not a current price promise.
Make the next action small
Download the R2 procurement and work materials, inspect the supplied synthetic example and list the unanswered mandatory questions. You have a basis for a comparable conversation, not a contractor marketplace or a guaranteed saving. Do not submit real household or supplier information to this local preview.