No, I have never joined at the presale of a token because maybe for me personally if I have 2,000 ldollars, I better buy Ethereum, than I join in presale.
I have seen that presale for the current year is up the price of the token is difficult and even becomes a coin dead.
Maybe for those who want the adrenaline to be strong, I think it's better to try joining presale and if it becomes a scam is the presale, then they have wanted the risk from the start.