Why traders don't pay?

[Melisandre]

2-3 is a bunch of time to wait. Speaking from experience.
No one will take that long to write a sentence. If they do then the option is to write broken sentences.

In my experience 30 seconds is not enough time for any form of role play interaction. My first encounter with a pirate ended in this 30 secs thing. He gave me basicly no other way to react but in his favoure (give him money or getting killed). He had a huge capital ship and I had a small transport. During the 30 seconds ultimatum that he gave me, I offered him two choices (both included him reciving payment) but he ignored my reaction and destroyed my ship anyways. Because "times up". I guess he just wanted to kill someone at the first place....

But it is clear as daylight that 30 seconds is not enough time. Unless your goal is to cut the RP and blow stuff up... Then that is the perfect ammount of time.