Hi, i just want to leave a feedback since there's no support forum.

I installed this contribution, and tested with all four prices. i added 1 2 and 4 item/qty for each item, and i calculated it base on the shipping price i inserted for each item to all four prices for each item.

The first price seems to calculate correctly, but the second and so on does not calculate correctly, it seems to be off from 5%, and also, it does not add the first price with the second price and so on to the fourth.

This is a great contribution but i think there are bugs that needs to be fixed. Can someone look into it?

Thank you!

More...