Customising magento category/product pages to show extra attribute

Hi there, I have a website that I'm currently building with Magento and a custome theme from themeforest called Ultimo. The website is www.vivatiles.co.uk. As you can see we sell ceramic and porcelain tiles. Some products are sold by the square metre (m2), some products are sold by the piece (each) I have setup a new attribute so I can insert this information for each product. I would then like this attribute to show up after the price on the category pages and product pages as in my attached images. If possible I would also like this to show up on any other pages where the price is shown - so the checkout page etc. It's probably best to contact me if you need more information. Thanks Ben