Search a numerical range

Good day Drupal Gurus & Ninjas,

I want to allow my users to search 'widget node' (fake name of the node) by a specific 3 digit numerical value. Each 'widget node' needs to have a numerical value range (i.e. 600-680). This range can (& most often is) be proprietary.

In a perfect world, I would like to give users the ability to search with an interface much like Kayak.com, at my basic skill-set, unless there is a module, this might be out out the question.

Thanks in advance for your help.

Cheers!