I’ve lost all faith in the US Postal Service. In last two years, two packages sent to me thru USPS just never showed up. I called and they showed the packages were delivered. One ended up showing up about a week later; where it was I was never told (although when I first called, they said it had been delivered (obviously to a wrong address). When possible, I make sure to get stuff sent UPS or FedX. Nobody’s perfect, and I’m sure the folks at USPS generally do a fine job, but there appear to be too many “exceptions” working there. In your case, the shipper should have insured it. Red tape nightmare to get any recovery, but with persistence it eventually happens.