Higher tier price is too expensive, I doubt some people will buy those more expensive tokens, IMO people will give up buying expensive prices, unless they buy the cheapest ones.
If all tranches are bought, total price paid = $6,660,000
Price for tranches 1-7 = $3,018,000
Price for tranches 8-10 = $3,642,000
I think a lot of funny stuff can happen if buyers are unable to make tranche limit orders.