Grabbing Data

I would like to know how to "grab" the price from this webpage. Here is a sample of the html...

<td id="currentPrice_item3874365" class="price" style="padding:2px">39.99</td>

Code (markup):

Please take into consideration that the "id" tag will change with the item number.

 

I can grab the URL but I don't know how to create the preg_match for variable data tags.

Anyone?

 

preg_match('/<td[^>]+class\="price\"[^>]{0,}>([^<]{0,})<\/td>/i', $html, $price);

PHP:

Untested, but the price should be found in $price[1] - $html is obviously the page source.