woocommerce分组产品设置覆盖属性中的价格

As you can see in the picture below I sell a grouped product. So on this page you can sell the 3 products that are in my grouped product. 1product 1package of 60 pieces . Second product 3 packages of 60 pieces and 5 packages of 60 pieces. I would like to change the price of the second and third product. I want to show how much it costs per box.

So the first product is 69 euro per box second should be 59 per box and third 54 per box but if you buy it, it should be the full price.

So let me say if you buy the second product 3 boxes of 60 pieces in your cart should be the price 177

So i gave it a property i made a overrule price. But the problem is , it doesnt show on the right place.