My opinion would be $4000 to $4500 for HUO TSPP and $5000 to $5500 for HUO Tron. I might trade a routed Tron for an HUO TSPP but there may be $800 to $1000 spread between the two if both are HUO. Just my take.
Edit: If YOU want the game and the deal feels right, it doesn't matter what others think or today's pricing might be. Until recently, these games were likely same value for HUO.