Look, quit the Fun with Figures in the guise of "setting anybody straight". You aren't fooling anybody with that stuff. That's pure advocacy and spin.
$150 (5E) retail vs $90 (PF) for the basic rulebooks for each RPG is a significant price disparity for those respective game systems. If you want to jam you head in the sand with a glurk and pretend otherwise and start playing games with what you count up and don't count? Go ahead. You aren't fooling anybody. That is pure advocacy you just engaged in. I do that every day in a courtroom and I know when the other guy is in spin mode. It doesn't escape me.
If you cast your eyes north of the border, the comparative retail cost is even worse. The cost of the PF Core Rulebook and Bestiary in Canada is the same for Pathfinder $49 and $39 for the Core Rulebook and Bestiary, respectively. For 5Es books, it's far worse though. The retail cost of those books in Canada (where I live) is $58.00 each. Add in HST at 13% and the retail math is:
($49.99 + $39.99) x 1.13% = $101.68
($58.00 + $58.00 + $58.00) x 1.13% = $196.62
That's the difference in the retail price of the two basic games game in Canada where I live. Is that a significant disparity in price for these games? Of course it is. Stop it, ok?
To compare the price of 6 x 96 page APs for Paizo at $22.99 retail price each to the 2 x 96 page books by WotC at $29.99 each and pretend they are equivalent products which provide equivalent play experiences and length of enjoyment/pride of ownership is also a plainly false comparison.
When you are the one doing the buying, my guess is when you bought six books in one case and only two of them in the other case? I'm guessing you noticed. When every book is 96 pages in length, and the interior contents of all of them are practically identical in layout and art style using the same map artists -- this isn't something you are going to fail to notice, either.
They aren't the same total number of products; one of them has six books and the other has two. Inside, they look the same. One has 3 times as many pages as the other; 3 times as many books.
If you want to like 5E, like it. If you want to buy it - buy it. I bought both. I'm not making that choice. I'm not asking anybody to do so.
But I am not going to pretend that there is not a significant marketing issue with new gamers when it comes to the cost of admission to 5E. And I'm not going to let you do that either under the guise of "setting me straight".