"Ho-ho-ho-ho-ho-ho -- look at that!"surprised sheep 01

YouTube user "Jammin JD Sports Cards" has found the one and only 2016 Panini Classics Football Significant Signatures Legends Platinum 123 Roger Staubach autographed trading card! Fast forward to 10:27 to watch him open the pack with that hit:

Platinum cards in that series is serial numbered 1 of 1. Staubach also autographed the Gold parallel of that card which is serial numbered to 10. Both parallels features autographed stickers.

I'm guessing the market would value that card at less than $300, considering a redemption for the 2015 Topps Definitive Collection Football Legendary Autograph Red LAC-RS2 Roger Staubach card, which features an on-card autograph and is serial numbered 1 of 1, recently sold for $305 on a popular auction website.

Staubach played for the Dallas Cowboys from 1969 to 1979, during which led the team to the Super Bowl four times as a starring quarterback, two games of which he lead the team to a win at Super Bowl VI and Super Bowl XII.

Question: What's the most you'd pay for that card?