At this point the cleaning fees are just a scam to make the listing fee seem artificially lower.
People did the same thing on eBay by making the items almost free but the shipping expensive, until they fixed the eBay interface, e.g. by letting you sort by price + shipping and showing shipping fees before you click.
People did the same thing on eBay by making the items almost free but the shipping expensive, until they fixed the eBay interface, e.g. by letting you sort by price + shipping and showing shipping fees before you click.