I had that experience at FedEx until they got to know me (I shipped maybe three basses a year for a couple of years of trying out different models and then selling or trading them). I think it was anything valued over $400 at the time.If you ship with FedEx and declare in excess of $500 (I think that’s the threshold) then they demand to inspect your self-packed boxes or use their packing services, or waive the declared value benefit. Does anyone know if USPS, UPS, or PirateShip has similar qualifications?
And, to be fair, the last item I shipped where this was an issues, I was quoted a fairly reasonable packing cost but it wasn’t a full bass in a case.
FedEx also doesn’t technically insure the item based on the declared value.
I’ve found a couple of things: if you have an account with the shipper (FedEx, UPS) they treat you as more legit, and are less likely to inspect. If you come with prepaid, pre-printed labels attached, same. I used to use FedEx bc they were the lowest cost, but switched to pirate ship over a year ago, using UPS. I’ve never had a box opened at the UPS store or the UPS depot.
I think, though, that YMMV wildly depending on your store and the staff.