I have a product whose shipping price is $8 per item (1-3). I want that if anyone wants to buy more than 3, then it will charge $1 for each item. I mean if anyone wants to buy 5 items at once he will be charged ({38=24}+{21=2})=26$.

Now please give me this solution how can I set the condition? I need the solution for the “table rate shipping” plugin. Also, I need a manual condition solution, not coding!

I have tried many conditions but not working