Craigslist Ads poster, 100 cities, 1-live ad in computer gigs section

I need an ad to be live for 7-days, and for that same ad to be posted in 100 cities within the United States on [login to view URL] . . . willing to pay $250.00 to $350.00 if this can be completed correctly. Here is a sample of the ad: We are seeking [50] Texting App Testers for the (enter city name here) area. This is a Part-Time position paying $20/hour, flexibility in creating your own schedule. Having any previous TEXTING experience is a must, while using a smart phone [Android 0R iPhone] 0R mobile device. Applicants, please respond to: (enter city name here)@[login to view URL] In response back, please include: A) First & Last name B) Age C) Cell phone number D) Type of smart phone device, either Android or iPhone Once we have reached the (50) applicant total we will be responding back to all applicants shortly.