Just as a postscript for folks, KL reached out to me on Ebay and explained that they'd reviewed their listing and msgs sent and that they could have done better - so waived the postal fee for me as a gesture of good faith.
They also took the time to explain that due to the lockdown, extra large volumes of orders and issues with Australia Post they're operating at maximum capacity - hence the staff member perhaps was just trying to fire through the emails. Understandable and I appreciate that they took the time to rectify the issue, explain how they believe it occurred and subsequently have changed the listing to assist future buyers.
Very much appreciated and I look forward to placing an order for the rest of my gear.
Thanks for that. We appreciate the support!