own I completely understand your frustration with UPS But….
I assume the main reason AoA uses them as their primary shipper is two fold
1) if by some chance the package is lost, damaged , etc the claims process is Much easier to deal with than with a Government owned company, if you have ever had to deal with USPS and a claim you know the nightmare that is.
2) Actual cost of shipping packages, UPS give a substantial discount based on volume, USPS is minimal if any..( unless you are Amazon.. Lol )
Now with all of that said I personally can Not stand UPS.. I own my own company, Inertia Racing Products and I ship 800 to 1000 packages a year on average , I will NOT use UPS unless specifically requested by the customer. I have had Very bad experiences with UPS … But USPS , as stated has the pita claims process..
So my rules are simple , any package under 250.00 retail value usually goes USPS, anything over 250.00 goes FedEx , I have found them to be reliable and much faster delivery times, in turn keeping the end customer happier