I'm sure this is super easy, but I can't find it.

First off I got my first order today

But, I made no money

The dreaded shipping monster got me

I sell child safety products. Now I'm not stocking some of the larger more expensive items b/c my supplier is only 2 days UPS ground away.

Turns out some products in my store will be shipped to me in separate box's. This will KILL my profit margin. So a total order of 3 lbs cost me 16.50 to get it to me.

What can i do so certain products (oversized ones) get a shipping price of xxxx and other items get USPS calculated price?

The problem lies is that the oversized items all weigh diferentlly. So one package thats a baby gate might weigh 20lb, and another is a tub guard that wieghs 1 lb. So obviouly you can't charge the same flat rate on those two items.

Please help guys!!