I'm an indie game dev who has used Indievania for a previous release -- it's same kind of PayPal-powered setup, only they ask customers to tip them at time of p

I'm an indie game dev who has used Indievania for a previous release -- it's same kind of PayPal-powered setup, only they ask customers to tip them at time of purchase instead of taking a cut of every sale. Could you explain why I should consider using you instead of Indievania?