Good to know about the designing part and your title. But the cost may vary after getting proper requirement and number of banners to be design.
Before start working on the same... I have some question to be solved by your end. Trust me, this doc may help us to save our time with quality designs.
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Over view of my profile and skills :
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You may find our status and quality-work on my profile page, ( https://www.freelancer.com/u/dpbhatt02.html) in which we have rank at TOP 1100 out of 14 million users with an overall rating of 4.9/5.
I have a team of creative designers who have expertise in tools like Photoshop, Corel, illustrator, Bootstrap etc. and experts in PHP, WordPress and Front-End development.
p.s. You may ONLY find our bid if we think we are double-confident on delivering the work On-time and In-budget with High-quality. Wish you and your business firm a great success ahead!
Regards,
RP