How can this be adapted to another security purchase?

For a penetration test, increase emphasis on authorized scope, methodology, manual validation, reporting and retest. For a vCISO, increase emphasis on the named lead, governance outputs, implementation hand-offs and availability. Preserve must-pass legal, safety and commercial conditions.

Publish the revised weights before proposals are assessed, require them to total 100, and keep the original version in the decision record. The point is a fair and explainable choice, not a template that forces unrelated services into the same mold.