Non-business sellers can set their listings to automatically relist if they don’t sell for free and without counting towards monthly free listings.

That is, sellers with less than 100 sales & $12,000 turnover, who don't have a store or use Selling Manager or Selling Manager Pro.

Apparently, non-business sellers also do not use Turbo Lister, as in it's usual, inept, clunky, fumble footed way, ebay has not made re-listing available from Turbo Lister.