Classified Made Easy with Google Maps V3 - $20 - Free lifetime updates
Classified made easy is an easy to use multilingual script which can be used as classified or any kind of listing website. Listings are shown on Google maps and in text mode as well. HTML5 Responsive design and 10+ bootstrap themes included. It can load thousands of markers on map without any performance issue and you can use the API options to connect to your own external database. Custom plugins functionality allows you write custom plugins or code. Clustering, GeoIP, Adsense ads., PayPal and many more features. You an also use the Oodle plugin to auto populate listings.