eBay's transaction report puts a multi-item order's details on the first row and each further item on following rows. ai-bookkeeper read those rows as "other" transactions of $0 and added them to the payout. The totals were right, but the payout showed phantom lines.
Rows with no Type and no amounts are now skipped. One new test adds a second item to the fixture order and checks the payout still has its five real rows. The fact comes from eBay's help text as quoted in search results (ebay.com is blocked here), so no real multi-item export has been tried.