Well if you are looking for a 1-time cost indexer, then you can take a closer look at GSA's indexer. They regularly update the indexer with new indexing sites, or sites that will help get your links indexed,e tc. But please note that this tool is very darn slow, and for 1 link, it can submit to a few thousand indexing sites, and that may take a minute or 2 to process 1 link. So if you can imagine if you have a few thousand links pending...