Tried the discounts options, but really confuse how the function works.

Example this product is 5usd
Customer buy 10 can get each 4usd (total40usd)
Customer buy 100 can get each 3usd (total 300usd)

How can i achieve the example above, i tried set at sale discounts, but not works.

I don’t think what you ask for is possible. 

The sale discount only applies to single additional products. If you put in a 9, it means your 10th item will get a discount. And then the customer has to buy 20 items to get 2 discounted because he hits the 2 times 9 threshold. 

Edited March 13, 20213 yr by opentype

1 hour ago, opentype said:

I don’t think what you ask for is possible. 

The sale discount only applies to single additional products. If you put in a 9, it means your 10th item will get a discount. And then the customer has to buy 20 items to get 2 discounted because he hits the 2 times 9 threshold. 

Is there any other solution can achieve my require?😟