The WAS Advanced Pricing extension allows you to set-up more advanced shipping costs.
The extension will add a new section under the regular shipping cost settings, with different options such as costs per weight / shipping class / category / product.
A extensive doc is available online; Advanced Shipping – Advanced Pricing
Current version: 2.3.1
My name is Jeroen, go ahead and try to pronounce that! I bet you get it wrong if you’re not Dutch 
I am a professional WordPress Plugin Developer, working from Alphen aan den Rijn in the Netherlands. Besides being a seasoned developer, I have a solid background in SEO and have been responsible for hundreds of websites and webshops in my previous work experience.
I build custom plugins for WordPress, WooCommerce and Easy Digital Downloads. My focus is to build the best, secure, reliable, optimized plugins with a good User Experience.
When not working, I like to watch tv series and eat some healthy home-made pizza.