I find it very curious how facebook's advertisements (especially on instagram) seem to have a lot more products that are cheap commodity Chinese products, whitelabeled by a glitzy 'startup' brand, and add a 500%+ margin. Very often a quick search can find identical items (maybe without a brand label) on Aliexpress for a fraction of the price.

Google search and on-site ads can be annoying and of questionable relevance, but I rarely see items that are so egregiously ripping off consumers. I dont see this much on twitter promoted tweets either.

What is it about facebook's ad business that encourages such a high proportion of overpriced garbage? Is it the mediums focus on pictures and video that makes these sales work? Is the audience just dumber/less savvy and so these platforms are the only places with enough suckers to do this successfully?

TikTok's sponsored videos seem to be falling into a similar trap to a lesser extent - the markup is less extreme for the few I've looked at out of curiosity.

Do Google and Twitter have some process for quality control to keep the garbage out that Facebook does not? Or is the medium the primary reason for this perceived difference?