What matters in practice
Ask how the concrete will be prepared. Mechanical diamond grinding, edge work, removal of weak material and cleaning contamination are not decorative extras. They are part of creating the profile a coating needs to bond. If the quote only talks about colour and shine, ask what happens before the first layer is installed.
Repairs, moisture concerns, failed old coatings and damaged edges should be discussed plainly. Some conditions can be included within a defined scope; others need to be assessed once the slab is exposed. What matters is that the quote tells you what is assumed, what is included and what would require a change rather than hiding all risk inside a single vague number.
Then compare the actual finish build. Is there a base layer, decorative broadcast, clear topcoat, texture option or different approach for a commercial area? More layers are not automatically better, but the recommendation should make sense for the substrate, the environment and the intended use—not just for a marketing slogan.
Finally, make sure the handoff is clear: access, preparation before the crew arrives, expected return to foot traffic or vehicles, care instructions and who to contact with questions. The best quote gives you a useful plan, not just a price to react to.