You're going to find people who operate all across the board here-some will answer you in minutes & others, well...
Taking into consideration that since the "new" audiogon started there have been lots of issues with their technology, then add in the human factor & sometimes I wonder how anything gets accomplished.
I would suggest looking thru archived threads about how to conduct transactions. From the homepage at the top highlighted in yellow, click on Forums. Type in transactions (or other words)& you have a day's worth of info. Good luck.