In many (most?) cases time=money is a false equivalence because time spent doing something isn't necessarily always time you would be spending working, but the local postal services are only open during hours I would be working, so it's not a false equivalence in my case.
Receiving the item you ordered and paid for is easy and free. Returns are not.
Why are we even having this conversation? They sent me a box of clay when I ordered a car part. This isn't an ambiguous situation.