My counter: why do folks here routinely suggest just throwing money into the wind for the sake of spending? You act like there's no way to get a good monitor and to not spend a ton of money. There's a lot of consumerism that gets promoted on these forums—like upgrading devices yearly, buying things brand new all the time. I do my part to encourage people to be wise with their money and responsible with their electronic goods purchases.
For what it's worth, I have a nice 4K Samsung monitor with USB C power delivery and built-in speakers. Got it for $250. That's inexpensive by my book, but maybe not in yours, I don't know. But just because you can spend $500-1000 on a monitor absolutely does not mean you ought to do so. Doing so when there are acceptable alternatives is foolish.
My point is ultimately that there are nice monitors you can get that are also inexpensive. I bought mine in used condition and got a good discount.
FYI:
1) Displays do deteriorate as a function of time. Your used monitor had some (visually, the best part) consumed by its previous owners. Hopefully your good discount justified the fact that you got a partially-consumed product.
2) You suggest that there are
nice monitors you can get that are also inexpensive. Sorry but monitors are
not like 2x4s at Home Depot, where if you root through a big enough stack you can find a
nice straight one at the same cheap price as all the warped ones.
3) One's own ability to visually perceive is part of how one defines
nice as regards a monitor. Folks with developed visual perception bid up the price of visually superior monitors to where there are
not equal monitors you can get that are also inexpensive, because the folks with superior visual acuity would quickly buy them up; causing the price to rise and/or causing them to be unavailable. A
nice cheap monitor is only as defined by one individual's limited perception.
4) I referenced visual perception above but other parameters are also relevant to each individual. Latency for instance is paramount to some folks, but not to me. Similarly how the display looks in its intended location can be huge. The entire feel of a home office may be defined by the computer's display. Or a high end graphics studio can destroy its whole image with low-end displays in the mix versus something like an XDR; plus being surrounded by visually good design helps designers create visually good design.
Note that I do not suggest that folks should not buy what works for their own individual perceptions and budget, because I do. I do however believe that claiming
"that there are nice monitors you can get that are also inexpensive" is solely in the eyes/brain of the claimant.