It is a strategy for them to promote their project. A 50% discount is kinda the maximum discount for me; any higher than that will be a big loss to the project. And with the amount, I hope it is only for the first 20 or so investors or like the first week or so of the project. There is no problem with them giving discounts as long as it is not too good to be true or else, the people will start to doubt them. It's discount we are talking and not profit afterall.