just to keep it interesting -
I ordered some photographic film late in the day last Tuesday, a box of B&W and I meant to order some color film for landscapes, but clicked the wrong button and accidentally ordered one better suited for portraits -
I noticed the mistake as soon as I got the almost instant order confirmation email
no big deal, and no need to cancel, I was almost out of that film anyway and would still use it, so I went right back on and ordered the one I really wanted.
the company I ordered from is in NYC - I'm in upstate
the first order - the one with two boxes was here on Friday via UPS. The shipping email for the second order (one box) said it would be here Monday.
Monday I checked the tracking and UPS said they had, on Monday, handed the package off to their delivery partner-- USPS

- giving it to the local sorting station - where it sat for three days. the tracking for those three days said there was no guarantee on delivery timing. Even after arriving, the tracking still said it was at the sorting station
so - four days longer for a short transit distance just because USPS was in the mix