SEO Article Writing for Fine Jewellery site

I am a Cyprus (formerly UK) based web designer with a need for articles to help with SEO support for a client's website. Some articles will be posted on the website itself, others will be published on Article Directories. These articles must be written with ORIGINAL CONTENT (I will be using Copyscape to check) and I am seeking a writer with VERY GOOD English writing skills. The target audience in the majority of cases will be people living in the UK, though people in Europe and the USA/Canada do also buy products. Please do not waste your time if your English grammar and spelling is not TOP CLASS. Typically these articles will be about fine jewellery, gold jewellery, fine silver jewellery, jewellery for sale, jewelry accessories, (etc) and will include specific keyword phrases like those which will be provided for each article. Needs HUNDREDS of 4-part sets. This is a major project, ongoing indefinitely, needing about eight 4-part sets per month. The content style would be fact based/promotional/opinion/informative - based on keyword phrases supplied. When I say "articles" I really mean SETS of articles. My client will need one original 500 word article for the website and three 500 word spins for publication in external Article Directories. All 500 word spins need to be a minimum of 30% different from each other, so as to avoid duplicate content issues. The brief for the initial batch of 4 sets of jewellery articles is described in detail on the attached document “First 4 jewellery articles [login to view URL]”. You will see I list a primary keyword phrase, 2 secondary keyword phrases and then related (LSI) ones which can be used once within each article. I have also uploaded a set of 4 articles, Master plus 3 spins, written to that same general specification for a Cyprus property client; showing how it is presented to me. I am happy to receive articles in MS Word format. So, PLEASE GIVE ME YOUR PRICE PER SET, based on 8 sets per month. Sets of 4 = a 500 word main article PLUS three 500 word articles ‘spun’ from the main one, following the guidelines in the attached brief. Please remember the 500 word versions ARE NOT WRITTEN FROM SCRATCH, but heavily based on the 500 word ‘parent’ article. Target price per set of 4 is $30. Finally, remember that I will want to see examples of SEO articles that you have previously written. This is ESSENTIAL. Preferred method of payment is via Paypal if escrow is not available. Commencement of writing 1st articles expected mid June 2009. Many thanks Adrian Questions 1) Do you have any relevant experience with writing articles about Dubai? 2) Remember that I will want to see examples of SEO articles that you have previously written, together with the keyword phrases that were supplied for them.