Advertising can lower the cost per item, if there was a large startup cost and marginal costs are small. More importantly, facebook ads have caused me to buy mo

Advertising can lower the cost per item, if there was a large startup cost and marginal costs are small. More importantly, facebook ads have caused me to buy more things because the ads showed me things that I thought were useful that I otherwise wouldn't have known about. Honestly, I feel like maybe I should be paying to see FBs ads sometimes.