You can add as many classified ads as you wish. Each stands on it's own merits.
Transportation is 10.00 per ad for 45 days. You can edit the ad if you sell it in say 5 days and replace the content and images with others.
If you contact us through the contact page, it may be possible to set up a block of Monthly/Yearly ads where you would have them for a full year and just change them when something gets sold? It would be a custom deal for you at that point.