I'm not sure if this is really an etiquette question so much as a business one, but I figured I'd post it here anyhow and see what the group thought.
I have been looking for a particular widget, and the other day saw a widget that I liked (at a good price) on Craigslist. I emailed the poster to inquire if it was still available, and was told that it was. Very good, I followed up by asking when would be a good time to schedule a pickup, and got a fairly vague response of "this afternoon". So I followed up again indicating that I was fairly available this afternoon, and to just tell me where and when. To that I was told to text or call around 3:00.
Accordingly, I sent a text @ 2:59PM, "Hi, this is Norrina, about the widget. I am available for pickup when you are." Half an hour later, there has been no response.
I know I said I was ready when the seller was, but that was with the belief that I would hear back fairly promptly. It's going to be a 30+ drive each way to pick up this widget (I know roughly the area of town it is in), and I need to pick up some groceries and get home to make dinner at some point. Would it be rude of me to give it another 15-30 minutes then go about my day even if it means I am unavailable if/when this seller ever decides to respond?