I guess that's fair, and I really need to learn to not make off the cuff statements without going into details on Lemmy :)

I really had in mind more things that have prices printed on, etc. I definitely agree we would be better off including tax on price tags.

I agree it shouldn't take that much effort to include it in things that have dynamic displays (like gas), but I suspect the reason for that is part inertia, part confusion when it's included or not, part nobody wants to look like they raised prices.