title: How to add custom words behind product price
body: <p>I am trying to figure out how to add "Per Square Feet" behind the Product Price. It should be only applied to selected products - not to all. Any help is appreciated.</p>
  
  <p><a href="http://postimg.org/image/tnfsjap39/" rel="nofollow">This is the screenshot for reference</a></p>