Shipping Question v. trading

[thechrisdotcom]

I have a question about shipping to others....

So I've gotten stuff sent to me from USPS in those flat rate boxes before. And I've been given the tracking number, but they've never worked for me when I look them up or the package isn't updated on it's current location.

We're supposed to supply the tracking number to others when we trade correct? Plus I think you have to pay more for the tracking feature, is that right?

I haven't shipped before with the flat rate stuff, so just curious how it works.