BH, I'll have a look around but I think it will be hard to get info to refute yours or my assertions.
Maddocks by yours, and most people's opinion, was hardly in high demand and the offer he got from tahs/aru might have been quite low and his manager said 'We can do better than that.'
Assuming neither of us can prove the other wrong I would like to compare us to NZ. They seem to hold on to players that are developing. It may be that Kiwi's value being an AB compared to us being Wallabies, I think many AUS players value being Wallabies in terms of value it adds to an OS contract.
OS players who are not in the Kerevi, Cooper, Koro box will most probably stay with the bigger money rather than come back to Super Rugby and take a chance on a RWC shot.
The ARU/Super Rugby franchises spend very little on developing players but, they strike me as being happy to pay top dollar to get Leagues and OS players.
Then with Leagues players often have to pay a couple of seasons before seeing a union player of worth (Koro is an exception).