Banner/Tile Design and Page Design - Long Term

Hi, We are looking for a graphic designer to create 8 promotional graphics/banners (approx 250x150 and 180x120). This is what you will be quoting on so please advise of the time and cost for you to complete these. We require you to PM us with some of your sample work in banner and web design. We will provide you with the website design that the promotions must fit in with (automotive ecommerce site) and sample content for each of the promotional banners (e.g. shipping / security / etc). We are looking for a long term ongoing relationship as we require graphic promotions for monthly specials and a monthly newsletter (if you have sample newsletter designs – provide these too). We would also like ongoing enhancements to our website design, so detailed experience in this will be a distinct advantage. Thanks