I saw this post on my local Kijiji for a 30'' Aluminium ACD selling for 850.
Wut, 850 dollars? What a ripoff. Someone's fishing for really gullible people, trying to sell such an old monitor for such a high price.
Besides, the 30 inch model used a much inferior TN LCD panel than today's IPS-based screens with far worse viewing angles and color reproduction. This can be quite bothersome when sitting close to such a large screen, as just a small shift of your head will make hues and/or contrast shift in a very distracting manner, especially at the far edges of the screen.
This monitor seems to be released long time ago and it's ccfl back-lit.
Not to be a nitpick or anything, but it's actually edge-lit, like almost all LCD screens these days. True backlighting didn't really take off for desktop displays. And, CCFL tubes age like any fluorescent tubes do, losing light intensity and color accuracy in the process, making an already rather bad monitor even worse. Also, they have a warmup period when they don't perform at full strength, something which also increases as they age.
Do you guys think it still worth the investment?
I'm sure you don't mean the word in its literal meaning, as buying any tech gadget is a terrible, terrible investment (value always deprecates).
And yes, it's an absolutely awful purchase at that price. Just...mindbogglingly bad.