I think buying PPC ads may be more costly because the profits on CPA are in range 1-2$ for basic email/zip submit.Infact for FREE trial offers above 8 to 10 $ can be good.
I think buying PPC ads may be more costly because the profits on CPA are in range 1-2$ for basic email/zip submit.Infact for FREE trial offers above 8 to 10 $ can be good.
so if you spend for example 1k$, youll get 100$ profit. I think it's not bad - you don't spend time much for it