Unfair eBay fees for used cars

Having just been through the process of selling a cheap used car on eBay I have seen first hand the unfairness of eBay's fees for this category.

By a cheap car I mean $250.

eBay's fees are $5 for the listing and a fixed commission of $40 upon successful sale.

For a $250 car that means the fees total nearly 20%.

Selling a $50,000 car? Your fees would be just a fraction of 1%.

I realise that eBay have to be price competitive with other online car advertising sites but surely for cheap cars they could have a lower commission based on the sale price.

Now I see why I often see cheap used cars advertised outside of the used car category.