Yes, sir. I agree. When you get to about 500.00 your hear something in your ear saying "More, More." When you get to 1kbuck, it's "Almost, almost." When you get to 2k, it's "IDIOT."
I've always made a point to insist on 100% copper. I know, it's extravagant, but well worth it.
Dave
A different twist to "...the law of diminishing return."