I make this video to printed flipbook online shop. flpbk.io: https://flpbk.io https://flpbk.io I've done nothing to promote it (except posting this comment) for

I make this video to printed flipbook online shop. flpbk.io: https://flpbk.io https://flpbk.io I've done nothing to promote it (except posting this comment) for more than a year. It's around $500/m revenue