Need Help Importing Data

I'm building a Drupal site for a client who has a large amount of data in a largely unstructured form in 66 rich text files (RTF). Here's an example from one:

Each block needs to be imported as a node of a custom content type wherein I'm using CCK to add a CCK_address field, a phone field, and a link field. Each node belongs to a taxonomy category representing the state->region->city of the listing as well as one representing the sort of listing ("Town Services" above). I think the client is willing to transfer the data into a CSV, for example, if necessary to prepare it for import. I'm still new enough to Drupal that I didn't even know what to suggest this would cost, so I'm looking for estimates. Is anyone interested?