Every scan gets Keep, Skip or Insufficient data against your own rules. Only the books you keep join the batch.
In a Turbo batch the book goes to Amazon the moment you scan it. Scan the last one, walk to packing.
Buy-box rules that never price a book below its Amazon fees, running on a schedule in the background. Not a second bill.
Profit per book, per batch, and per source, pulled from Amazon's own Finances API.