I'd like to point out again, that I'm not complaining about parts being marked up in general (see my original post).
I'll freely admit, I don't like it, I think it's ******/shady, and I believe that if a shop needs to mark up parts to remain profitable, that they should either raise their hourly rates, or maybe figure out what's broken in the the back-end that necessitates such a practice. Really, if a shop wants to markup parts for sale, perhaps they should get into the parts business, and stock parts for customer jobs.
That aside, again, I'm not complaining about the fact that the part was marked up. I'm complaining about the rate of markup.
This Schwab's is right next door to an O'Reilly, and, as it turns out, I've got an acquaintance that works there, this happens to be where they got the part from, and she was willing to dish on some details, such as the discounts provided to their neighbor. O'Reilly's retail is $68.99 walk-in for the part (a joke). The price they charged Schwab's was barely more than half of that - less than $40. So, still a more than 150% markup over what they paid.
I didn't figure many/any of the folks in the repair business would take issue with markups, but I've got to say, it's chilling to see how many are defending the practice with "any markup, no matter how ridiculous, is legitimate".
Also, analogies like the grocery store or restaurant are laughable. Just, wow.
Anyhow, once again, I've learned a lesson, and had certain things underscored. I'll let Schwab's change my tires, and their alignment fees aren't unreasonable for being immediately local, but, as mentioned, I'll never trust them to replace parts on my vehicle again.