I'm getting charged the relevant fees for my seller level.

On my store, it's about 9.35%. On this and my other account it's 10.9%.

I'm not mug enough to pay listing fees.

It would seem you don't actually understand eBay selling. Maybe try spend some time researching 'selling on eBay'. It will probably be time well spent.

Or delete your account. eBay won't care.