do they crackle when you handle them? I leave mine on the stretchers for several days, but they dry fast here. So as long as they are dry and have that tissue paper crackle to them they are ready to be hung and stored until shipping or selling.
It also depends on the fur you are talking about. I am also not sure who or where you would be selling them this time of year, since most of the sales have already come and gone, and it appears that sales were down at the end of the season and not all furs were sold. This means that the first sale of the year, in the fall might not be very good since they have an inventory that has to be cleared first.
My best suggestion is to go talk to the buyer you are planning to deal with, bring them one, and ask for an evaluation, swallow some pride and ask what you can do better next time. Then go home and implement that. Making your customer happy, and doing the steps correctly will result in more money for your time.