I do not remember waiting hours. Usually within seconds...as I post from saved in bulk sometimes 100 + at a time. Then I immediately go to my unsold and compare to active (by photos) removing from unsold as I go. Probably a long way to do this...but trying to avoid duplicate listings.
A couple of times I have had to refresh browser once or twice...but have had to wait hours.
Now have had them not show at all like for day or two, don't know if they would have been longer as I usually remove when I catch them and relist in hopes it works.