The customer cannot see what they are buying
A single lump sum can leave too many questions. The customer may not know which rooms, materials, preparation or cleanup are included. Describe the outcome and show a few useful line items so the price has context.
The quote arrives late or leaves the next step unclear
People often ask several businesses for prices. If your quote takes longer than promised, update the customer instead of going quiet. When you send it, include a simple acceptance step, the valid-until date and your contact details.
A brief follow-up after a reasonable interval can uncover a question about timing or scope. Ask whether they need anything clarified rather than pushing for an immediate yes.
The price or scope is not the right fit
Sometimes another business is cheaper, available sooner or better matched to the job. That does not mean you should cut every price. Check whether your quote reflects your costs and clearly explains the value of your approach.
If you can, ask for feedback. Record the reason given, then look for a pattern across several jobs before changing your pricing or process.