If I want to invest in KGT tokens, should I buy the KGT token or buy a stake token?
You may do both. The difference is that buying KGT stakes is riskier than buying KGT token. But, at the same time, you can obtain KGT for a cheaper price by buying KGT stakes.
How do we know how much the stake tokens are worth?
You cannot know it with 100% accuracy until bounty is over. But, as I said above this 'intrigue' makes the buying of bounty stakes are more risky for the early investors.
How it could be solved.
You may see information about how many hunters participate in every bounty sub-campaign and how many stakes already earned here:
https://my.bountyguru.com/campaign/220Based on this data early investor (as well as hunters) may bargain on price on TOKPIE auctionable order books by placing their bids and asks (as you do when trade on ordinary exchange). So the reasonable price for KGT stake regarding risk/reward will be found. Of course, that price will be lower than KGT price offered on
https://www.kamagames.io/. Call it - a 'premium for risk'.
I usually use line model to forecast the number of stakes at the end of camaign, but exponenta model suits better now, especially after Tokpie appearence