The Post Office is excellent and usually cheaper than the alternatives.
If tracking is of supreme importance, then pay the extra money and go with FedEx.
You have to expect 2%-5% of transactions to have problems. Unless you live in a bad neighborhood, then a lot more.
Pay $30 per half-year for a box. It will save you all the headaches.
You must live in an area they perform quite well in then,i'm quite aware the USPS as with Fedex and UPS service or lack there of can vary area to area. That said having lived in 4 different states and numerous towns it's been horrible for myself personally both on a personal level and professional.
Sadly when ordering online from certain places one does not have a choice of whom to use, for example in this case as noted it was ordered from Amazon and the shipping partner is random with no choice allowed by the customer.. It still does not justify recycled tracking numbers that track the wrong packages a practice frequently employed by the USPS now and simply inexcusable IMO.
I wish it was only 2-5% i have had issues with, If i count late deliveries among lost packages,damaged packages,insurance claim issues etc on a personal level i would say it's closer to 40% dealing with them at work i would say closer to around 10%. It's happened so often when Amazon uses them even Amazon was shocked and at this point Amazon has more than over compensated me for the issues as even they saw it as unacceptable incompetence.
Why would i pay the USPS for a P.O box and give them yet more money when they currently can't seem to get anything right? But even were i to consider it the size i would need for the average package i get is anything but 30$ for half of a year in fact just to give you an idea for my area.
1 Month/6 Month/12 Month
1 (3 IN X 5.5 IN) $39.00 $67.00 $134.00 Yes
2 (5 IN X 5.5 IN) $58.00 $100.00 $200.00 Yes
3 (11 IN X 5.5 IN) $100.00 $174.00 $348.00 Yes
4 (11 IN X 11 IN) $173.00 $300.00 $600.00 Yes
As you can see even the smallest Box costs more than that per month let alone 6 and size wise i would need #4 more than likely if not at the very least #3 on the average.
I'm happy to hear your experiences have been positive and i hope they continue to be really i do. But the USPS is widely complained about and cheap for a reason, on the average their service is horrid. I'm a firm believer in that you get what you pay for (And when i am given the option i use Fedex sadly this isn't always a choice)