This is the place where Stones fans can advertise anything for sale, wanted, trade or whatever, from fan to fan. Advertisements are for free. To see the old ads go here.
I don't know why the Stones organization doesn't just allow downloads of concerts like these missing ones. Their archivist should just release them, seeing as they probably aren't considered commercially viable anyway. I know on one of the officially released dvds, they showed a clip of hotel or backstage jamming footage from Regina. These tapes, they will just sit there collecting dust while there are people who really want to hear them again.