Most expensive piece of vinyl you acquired is?

Orpheus10. Sadly, there is little i nthe way of price performance ratios to guide the buyer.
Plenty of low cost vinyl is great, and more than enough of the expensive stuff sucks.
The one pressing plant to avoid is Scorpio. Which does mostly sub $10 reissues.
Other claim 4 Men With Beards suck also.
Most major rereleases you do not know the pressing plant offhand.
Though RTI often has a sticker mentioning they pressed the item on the cover. (RTI is usually pretty good)

I have purchased about 150 new records in the past 5 months, no complaints at all from me about quality.

Elisabeth 150 vinyls in 5 months?...you must be a national champ lol...in only this year with that tempo you will buy more vinyl than i in my lifetime...i dont want to be rude by any means but i hope you dont have one of those obsessive compulsive disorders or something...back on track Liz i would want to believe in your theory that you will get LP sooner or later for cheaper...but in "my" case i would never see almost half of my collection cuz some quality pressings or rare pressings just cost more than 5 bucks...that dosent mean that i dont have bunch vinyls buyed at the low price...no one said that if vinyl is expensive must be sonicaly excellent...Orpheus every vinyl is story for himself so take a good look at all the pressings available(discogs have good database) and which is sonicaly most praised but in most cases i recommend you to go at the original pressing for 2 main reasons 1. musicaly original is untouched (in many cases remasters just sucks or repressing is not on level it should to be, some of modern "audiophile" vinyls sounds more like cd...but cant deny some of new remasters are very good) 2. value if you can find preserved copy
I would reccomend Japanese virgin vinyl pressings also, not expensive and quality is excelent in most cases. Go to quality over quantity make yourself a list of albums you want and you will listen OFTEN and be happy...dont waste your money on large collections of vinyl you will never listen to no matter how cheap they look...buy best pressing available.
Kind regards

I payed $15-$20 recently for certain hard to find Moody Blues member solo albums used and in excellent condition.

I have a lot of albums and still but many used but only for the right price. Older, hard to find and out of print titles still in good condition warrant spending more if you must have them.

Back in the day before digital when I bought a lot of albums, I do not recall ever much spending more than typical prices of the day for records. I have a few Mobile Fidelity titles in excellent condition that sold for a premium, but bought them used.

$90. My wife was not pleased...

$100 for Miles Davis "Pangea ", but it was a double album Honey, so only $50 dollars a record. A steal!