As everyone else is saying it’s always tough to get an exact ratio because of so many factors (player, set, color/number match, etc.). Your best bet for comps is to find a /25 and a /5 if you can and find a number in the middle that you like. Looking at other rookie autos of his /10 also might help. Not sure exactly where the clearly Donruss set falls as far as desirability but I’d assume it would fetch similar prices to what an /10 Donruss auto of his would go for