I have been selling some dubia roaches here and there. I recently had an order and the seller paid for overnight shipping. I told him that the order could not ship before the weekend but I would do my best to ship on Monday. I admit, I did not follow up and tell the buyer the item was shipped however I did ship on Monday as I said I would. I personally could go either way on this dispute hence the public posting for opinion. Anyway, the item was shipped and US postal puts the box between his doors. Either there was no knock or he did not hear one. The box sat in the heat and all the roaches died. In your opinion, who is liable for the mistake? If both parties are liable in what amounts?