if the tokens are not sold out in the presale I will invest on grid+... ICO on october 30th.. the problem is that for the presale you need to invest a minimum of 50k dollars.
I am also paying attention in upcoming auctus.org presale, i think they don't have a minimum investment and they already have a product being developed
I was looking at Centra but I don't think it is a good reason to invest just because mayweather advertised about it