Sorry, but that doesnt make sense to me...
Basically the ERC20 token that i will create will have a crowdsale but at the end of the crowdsale period the participants will get their tokens and also their eth. So basically, it's free. Just lock up your eth for the duration of the crowdsale.
Why would you make this "crowdsale" and than give it back to investors? why it's needed?
I just know if that's about finding the price for his coin and i thing already get some if the crowdsale are returned into the investors.