CL posts in multiple cities

Hello, I am looking for somebody who can deliver 100 identical (or similar) CL posts per week, in 50 different US cities, for six weeks. Most likely in the GIGS section. A total of 600 posts, 100 a week for 6 weeks. The maximum cap on this project is $500. You can space the posts out, they don't all have to go on at the same time. I would like to see previous examples of similar work. Your job will also entail tweaking/fixing the ad so it will not be detectable by CL. Ideally we would like one ad in each of the 50 states, on a semi-weekly basis. If you cannot do all 50 states, we can negotiate 50 cities. I look forward to your proposals. Nick