Shipping costs or shipping charges

Hello everyone,

Both of these make sense to me, but I sort of wonder if one is not better than the other.

- Before you hit the "Submit Order" button, take note of the shipping charges/costs.

I realize they are different as there are sentences in which only one of them would work. I wouldn't use costs in this one:

- Thankfully it's sold in stores too, so you can avoid shipping charges.

Thank you.