Missing skroutz unit price elements

I created a Chrome extension that uses product titles to extract the size of unit of measurement of it.
Skoutz.gr has already implemented unit-price elements for some product categories, so I skipped those pages from parsing. Using this variable and the price of the product I extract its unit price and render it to the dom next to product price. ** This isn't a production ready implementation. **

Screenshots

Without extension installed With extension installed