If you can't understand why someone would pay for a 24" ACD then what are you doing with a MacBook Pro? You would be just fine with an Acer or something similar. No need to spend all that extra money right?
The LED Cinema Display is great and I have had no problem paying 700 for the joy of owning one. It's perfect for my new 13 inch MBP and the best quality screen I have ever seen. PERFECT.
Have you ever used the Viewsonic VP series?
I had a Viewsonic VP earlier and they are amazing monitors.
It's the top of the line Viewsonic series with possibly the best ergonomics there is. And ofc it's S-IPS.
If on the other hand want expensive monitors, look at high end Eizo or LaCie.