Many sellers will cut whatever corners they can to get a lower price point, as that's what purchasers look for. The one that stands out to me is shipping, sure go for for cheap shipping on a trivial cost item, but I question doing the same when you're buying something expensive and not consider spending some proportion of the price on a better courier/service tier to have more certainty the item will get to you and in good condition, assuming the seller doesn't bake-in the cost of upgraded courier.