Show shipping costs on product-page

Hi,

I’m using woo-commerce on my site to sell plant. I would like to show immediately the shipping costs, could also be in a widget. My shipping-costs are weight based in 10 categories.
I did find some plugins which handle this. There’s one on the wordpress-site, I’ve tried this one, but then I get a calculate-button with a dropdown-menu. In this menu there are all the 10 categories to choose from, people won’t know how what to choose. So, this isn’t working. I’ve found another one on codecanyon, I don’t care to pay for it, if it’s working. I’m afraid that I’m paying and it doesnt work for my specific site.

Does anyone knows how to achieve this?

Regards,

Erwin