Oh and by the way, the pricepool was 150000 this week anyway, so if you actually tripple it then it would be 450000.
But I guess 1 department doesnt know what the other is doing.
Proof: email from monday : ~snip~
Maybe there was something wrong, probably a mistake from Stake team. I had received the email too and immediately visited Stake after receiving the message. Their VIP raffle tab was showing that there will be $50k giveaway. And they didn't made any announcement about the change of raffle prize in their VIP telegram channel.

I had also visited the red marked link to get more information but it was forwarding me to their regular $50k raffle page. And the ‘Prize Breakdown’ was showing that there will be 10 winners. I thought to ask about it to their support, but I forgot it later. However, they have updated it now.