This service is similar to Adwerx - using the same technique to follow the consumer who once visited your site.
The pricing - at $35/month sounds fair (annual subscription savings - 2 months free!) - though it is only for one zip code. (Adwerx allows your own list for following me - making it easy to target more than one zip code.)
The ad appears on many websites - across a vast network based on consumer behavior.
If you are into marketing online with ads, this may be a good option for you.
Some more features in next short review.