Heyo!
Looking into this situation there has unfortunately been a bit of a visual issue with today's update, thankfully it didn't actually change anything other than the visuals.
Essentially the colours got mixed up, but you still have 4 yellow 3 orange 2 red 2 purple 1 shadow just the 4th orange is in fact a red and the second red is a purple so when you rolled purple it was between the money and the wills and you got the wills which as it was a 2x chest got doubled to 15k.
Folks are looking to fix the visuals to avoid further confusion.