I still don't think there is. The strategy guide lists all the mercs, and there are only 6. Almost twice as many followers you basically just fist fight to allow them to follow you, then the companions, 2 dark brotherhood, 9 housecarls, 3 winterholds, then a bunch that will follow you after doing a quest.
But never have I read of one that requires 1000g. Not any info whatsever, and the people who "found them" are too dumb to explain any.
My conclusion? They don't exist. People are just dumb. If there is one, please tell me where to find them.