I am going to ship a package to a customer in a Priority Mail Medium Flat Rate Box.
I'll have to go to the Post Office to get the box (in the future, I can order 25 free ones at a time online, but I don't need that many now).
If I buy the shipping label online from USPS, it costs $10.85
So do I print the label at home, then go to the post office to get the box, and then package all my stuff up AT the post office, and tape the label on?
Does that mean I can't use Etsy to buy the shipping label? Does the post office just hand me the box for free, since I have the shipping label printed already?
Sorry, I'm a bit confused on the process here. Any tips?