27% bonus for these weeks is really big, If you are willing to take a risk in investing, and they have already collected 276 ETH for now and hoping it will increase more as the ICO proceeds.
Yeah but, 27% is not quite really big nor really small amount of discount, it is enough. Wow, really? 276 ETH? I'm sure this project will reach their max potential!
I think 20% to 30% is the perfect amount for early investors, anything more than is a bad thing because the percentage would be unreasonable and whose who got huge bonus will dump their tokens after crowdsale and cause the price to fall.