In China they usually need to pay 1 to 1.5 dollars for someone willingly doing it for them, it's open secret and an entire industry, it feeds platform's ranking/recommendation system to get ahead, sometimes platforms actively encourage it.

You may have heard of the Singles Day shopping event, it's common for sellers to boost their revenue that day to meet requirements from platforms, like selling a cheap T-shirt for $150 then refund it upon receiving the package.