The alternative approach your clients will thank you for:
1. Before you offer any additional value, be certain that the benefit outweighs the 'cost' to your client. Otherwise you are just product pushing.
2. Before you start the work, STOP and tell your client what you are considering doing for them.
3. Articulate the value of the service for your client. For example, will it save them time, improve their cashflow, or reduce their tax or stress levels?
4. Ask your client what benefits (value) they see in the service you're offering. This ensures that they fully understand and appreciate what you're offering.
5. Discuss the consequences of not doing the proposed work. Come from a place of caring - you want better outcomes for your client and they trust you to provide this.
6. Give your client some options as to how this value can be achieved. The options should have increasing levels of value (and price).
7. State your price and shut up. Your client will then either accept or they'll give you an objection.
8. If they object, revisit the value to be gained and the consequences of inaction. Ask again if they see the value of one of the options.
9. Document what you've agreed. The chosen option, the value to be gained and the price - and get the proposal signed off by your client.