Yep, I've used my P.O. Box to receive packages in the same way and for some of the same reasons. But now that little box is a couple of hundred dollars a year, so after about half a century "living" in that little space, I'm thinking it may well be time to give it up. My records show that it was ten bucks a year when I first moved in there!
However, my recent tale of woe would not have been aided in any way by having used my P.O. Box address, as all the problems occurred elsewhere. Today, with it snowing, if anything was to be delivered here, it might have been a good idea to have it delivered to the P.O. Box, had I known at time of ordering, that it would be snowing today?!?!
To go back a few years, decades actually, to another amazing tale of USPS that was eventually delivered to my P.O. Box, as that was really the only address I had at that time, I'll add this prime story.
Back before everything was digitized and put on-line, wall calendars used to be a thing. There was a hardware store (local chain) that started as a farm supply by name of Orchard Supply Hardware, that very much owed its existence to the railroad it was built alongside of, and so through the years they had known artists provide wonderful railroad art for their unique calendars. My family still lived in the local area where those stores were and accommodated my annual desire to obtain one of these wonderful calendars by mailing me one, usually just after Thanksgiving. Having been notified by my brother that the "train had left the station" I eagerly awaited the arrival of the new train art for my wall. It arrived in early July, more than halfway through the year it was supposed to cover, with tire tracks all over its brown paper bag wrapper a mere seven or eight months after shipment.
So, yes, the USPS has had its moments (or months) of lameness for a very long time now!!!