Facebook ads for info products?

Hey guys. I have an info product with $40 LTV (FullStack.Cafe) and wondering try to implement a Facebook sales funnel (pixel - awareness post - retarget with lead magnet - retarget with conversion offer). Did anyone tested is it possible to get a positive ROI for such low LTV? What is the minimal LTV I should shoot for to even concider Facebook Ads? Cheers.