The Apache Solr Money Slider is inspired by the TheFind search engine. The module integrates both the Money CCK and Apache Solr Search Integration projects. The Money CCK is a dual value field, price and currency. Both are indexed and presented as a jQuery slider.
Some users have been able to custom integrate with Apache Solr AJAX to achieve similar functionality as the TheFind search engine. This ability will eventually be included in the official Apache Solr Money project.