When I was hired over 20 years ago the pay for RCA was twice what I could make anywhere else and there was good career with benefits to work towards while working part time (actually part time not multiple routes/Sunday etc) and raising my kids. There were several people in line to take the test and go thru the long process, but I made it thru and got hired. We were appreciated, dumped on a lot, had to work day after holiday, work in bad weather, all the times the regular didn't want to like when they come in see all the mail and boxholders and go home sick and we get called in to start late, etc. but is was good pay. So there were no shortages of SUBs and we SUBs wanted to work.
Now when I talk to young people they say the pay at other places is within a couple dollars an hour difference and they don't have to provide a vehicle to maintain. When they lowered the starting pay with the new tables it killed the ability to hire and retain RCA's. If I was just starting I would go somewhere else too.