I ordered some expensive electronic parts (I am moving the AGM-114 Hellfires from my old soon-to-be parted out Volvo v70 wagon to a much newer v50 wagon, and the interfaces on the CAN and LIN busses are slightly variant…)
Anyway, I got an email from the vendor, who clearly has things wired up right with the US Postal Orifice - “Your estimated delivery date has changed”. Now this was on a small “Priority Mail” package, so it may be that such tracking updates are not available on run-of-the-mill “Ground Disadvantage” packages.
So, heads up kiddos - the USPS is not able to correctly “estimate” delivery even to larger urban centers with well-established infrastructures and millions of daily package deliveries.
Translation? Stuff gonna be LATE. Customers gonna demand a refund “because it was late”, and Amazon will make you eat the cost of the product and the shipping and fight to get your money back. Its a fuster-cluck, kiddos.