The cost per coin ratio will change if they hit the $25 million cap before selling 50k coins. Which most likely will be what happens since ETH is on the rise. This will mean they either burn more coins and give everyone 1:200 ratio which will increase the price of the coin or they divide the 10 million coins out to each pre sale buyer. That ratio would be much higher for example at current ETH price it would be a ratio of 1:400 so not bad deal for the pre sale to get 100% bonus.