Possible Underhul Event Tier Scores

[Kaziscate]

Here are my predictions on how many points it will take to reach each tier for the Underhul Event:
Bronze:200,000 points (We already know that)
Silver: 500,000 points
Gold: 850,000 points
Platinum:A small loan of 1,250,000 points
Here is the formula for the tiers that I've came up with for the differences between tier one to tier two and tier two to tier 3: t is the tier number btw
(T x 100k)/2 + 200k