I sell a number of different products so all of the boxes are different. Which also means that all of the weight is different. I ran a report for all of the shipping this year and I have LOST SEVERAL THOUSAND dollars because this shipping on this platform is crap. I have products that Shopify charges $8 to ship from UPS and then I get the bill of $52 or I have a product that should ship for $15 but the shipping tried to use $55 so I lose the sell. I have tried using the "advanced" subscription, and even a third party app and its just cost me MORE money.
Anyone have a suggestion or should I move to another platform? I've used this for 3+ years hoping they would fix this but that hasn't happened.
As you may know, you're having trouble with Shopify's limitation of only having a single box size that is sent off to the carrier for a live rate calculation, which is called the 'default box'. In order to add different boxes for different products based on weight & dimensions, you will have to use an app like our Multi Carrier Shipping Label.
The app helps you add custom boxes for each of your products based on its weight & dimensions. The app then chooses the right box based on the customer input at checkout and calculates the accurate carrier calculated rates.