I must of got lucky when I ordered my nozzles last year as they were all in stock at the time, got a couple of each so I didn’t have to bother for a while because of the issues I was having with getting the filaments.
I haven’t got any Bambu filaments at the moment but I probably will when I have the points to spend on some so I will probably suffer with the same woes at some point. I have been pretty lucky with my P1 as it’s been very reliable and not needed anymore than some grease and nozzles.