Everyone likes free stuff.  Microsoft Search Server Express is FREE!

• Go from downloading to searching in minutes with a streamlined installation experience, which makes it easy to quickly get an enterprise search infrastructure running in your environment.
• Review common administrative tasks, statuses, and settings in a single view using a unified administrative dashboard.
• Manage content sources, search scopes, authoritative sources, key words, best bets and other relevance tuning settings through a powerful, easy-to-use management console.
• Help ensure that only the right people can find information, using query and index-time security trimming.
• Monitor search performance and improve search relevance, with query and results reporting.
• Empower your users to quickly find the information they need, using a familiar Search Center interface.
• Pinpoint the most relevant information you need, with recommended best bets, authoritative sources, term definitions, hit highlighting, and query correction.
• Retrieve concise and clear search results, using duplicate collapsing, which allows you to quickly review a wide variety of relevant information.
• Stay on top of new information relevant to your work by subscribing to update notifications of your search results, using e-mail and RSS alerts.
• Build upon a familiar user interface and application platform that lets you customize both your search experience and the actions you can take on your search results.