Means someone offered and agreed to buy it, The OP is waiting to collect the money. Normally if money ain't collected or buyer backs out. SPF will be removed and go back up for sale. Saves deleting the ad, then when the buyer backs out. Re-post and get a infraction.
Happened to me, someone local, decided to buy something, I removed the ad from CGN. He backed out, I reposted it, item got deleted and I got a infraction over it.