1. Grab the nearest book.
2. Open the book to page 23.
3. Find the fifth sentence.
4. Post the text of the sentence in your journal along with these instructions.

If, however, you need to find lines that contain just a price, and nothing else, you can wrap the expression with [^...$].

Mastering Regular Expressions - Jefferey E.F. Friedl

So, does this make me an official geek or what?