Dear Reader, what I'm saying to you tonight is at variance with what most translation speakers and writers and gurus say — all of them more experienced, more economically knowledgeable and economically and professionally successful than I am. You have more reason to listen to them than to me. But I still say it. I can't not say it:
Translation is the core value of what you do, the service you provide to your clients. Don't advertise and build your brand and USP on 'more than translation'. Don't justify your prices with additional services or added value.
If your value proposal and your proposal in general is based on additional services or added value, you are sending the message that your core value and core services are not valuable, not worth charging for.
By contrast, translation is a prestigious professional service.