Submit already written articles to article directories

I recently listed a project for 3 unique articles and 3 re-writes of each...for a total of 12 articles. Now I would like to have 9 of those articles submitted to article directories. The re-writes were done in order to ensure that duplicate content filters are not triggered, eventhough I will have a set of unique articles to display on my site. 1. Since there are 3 topics, the three re-writes pertaining to one topic should be spread out into different artilce directories. Therefore, If you submit 1 topic (the 3 different articles) to 500 article directories, then you will be dong this 1500 times total. 2. Your list of article directories should contain a list of high ranking artilce directories. 3. Submission to article directories should be spread out over a period of 30 days...about 50 a day. 4. I expect daily updates via excel spreadsheet. 5. I recently saw a post on a forum, in which someone offered to write one article and submit it to 500 article directories for $25, with daily updates via excel. No articles need be written...they just need to be submitted to article directories. So I suspect $50 is fair