How do I adjust shipping settings for my hair product business?

[emcmc]

Hi

How do I adjust the shipping settings, where I am paying exactly, or less than, the customer for shipping? I sell hair products, and when the items weigh 1lb or more, USPS automatically sets the shipping to priority, when I have it set for a flat rate that's less than what USPS is charging me, even with the Shopify shipping rates. I know that shipping is often the determining factor if the sale is going to lead to a conversion, so I don't want to hurt myself....But shipping is killing me.

[Turlockyarnshop]

Items more than 13 oz have to ship priority now if you are using USPS, they changed the rates again.  If you have a USPS commercial account(shipping more than 5K packages a year), then up to 1 pound can be shipped first class.

I am running into a problem myself with items that fall in between that 13 oz-1 pound range; Shopify shipping gives customers the first class option still, and a customer was charged extra shipping when they received their item since I don’t have the commercial account.

[emcmc]

Were you able to find a solution?