FB Profile page banner for a Jewellery distribution business

Banner should talk about all three brands we are currently dealing with. Hogh resolution graphics of products can be provided. We have our website and link to our manufacturers websites can be provided to get an idea of our product lines and you are allowed to use any of their graphics if needed. You need to be very creative in the design and come up with your own ideas. Can you pls give me an approximate cost? We are a starup company so and there will be plenty of work in future if you can give us a good price pls.