How to effectively manage shipping profiles for multiple SKUs?

[YogaBear]

I currently have items that for example if they want to order 2 units of the same product, the shipping rate increases by $5 USD for each extra item.

Our issue here now is , what if the customer adds another SKU, into the cart the total cart price is calculated into this category as well and the shipping is combined.
For example a scenario we faced.

Order #xxxx
1 x Product 1 (Shipping $10)
1 x Product 2 (Shipping $10)
The shipping fee should be $20 dollars. Since each other = $10/unit
But shipping is showing $45 dollars because the whole cart is $110 so it is taking the highest shipping rate from both items and putting them together.

How do we go about doing this for multiple SKU being in the same cart if I want to fulfil below conditions 
Product 1 : Every additional piece $5 dollars.
Product 2: Every Additional piece $10 dollars. 

[Mirdas]

If you have multiple shipping profiles, then shipping rates will be combined when both products from different shipping profiles are added to the cart. The only option is to use a single shipping profile for all products.

[sniper2804 · Accepted solution]

As @Mirdas mentioned, this is not possible in Shopify directly.

If you are interested in a third party solution, our app ShipMagic can help you to achieve exactly the kind of shipping rate setup you want. Our app has something called has "Incremental Rates", which allows you to setup rates to increase by a fixed amount for every additional product in cart.