There were ways to pick up PS cheaply. My way was that my kids were in photography class, so they were able to get PS as a student.
I bought the whole CS5 suite with illustrator, etc. very cheaply. I added the free NIK filters, and bought Noiseware. These have served me well for nearly a decade now, and raw is through DPP. I don’t need newer NR tools because a) I have my own techniques using these tools and b) cameras keep getting better needing less NR and DPP is improved. My monthly amortized cost is about $3 or so a month. I bought LR in the past, saw where they were headed, and went the opposite direction.
Now my kids in school would have to pay $240 each year for the suite, and never stop paying to use the products where it was maybe $300-500 to buy it outright.
However these days there are other products just as good as photoshop or better in some ways, at much lower costs as well, if one wanted to look at options.