I bought a 30" Apple Cinema Display in the mid-2000s, and gave it away last year to a colleague who wanted to resurrect a period-correct Power Mac after upgrading to 5K screens. Not holding out much hope for the build quality to be the same sadly, but monitors certainly can be decade-long investments! FWIW 5K screens were 1100 apiece from Microcenter - vastly less money than the Cinema Display was in the UK back then!