Veracity of albums for sale being "sealed"?

The few sealed LP's I have purchased have tended to be noisy/dirty ( all those years in a paper sleeve) or warped. I would prefer a used mint - LP to a sealed one.

Thanks to all of you for your insights. I have to agree with Siddh and Has2be on buying them to be played, but once in awhile you run across an album you want and it happens to say "sealed" in the add, hence the higher price for one thats sealed-seems like marketing hype but hey, who am i? I have a collection of around 1000 LP's (which I know pales in comparison to some of you), running the ga mut from classical to jazz, rock, new age. Many are collectables including some RCA shaded and white dogs and Mercury Living Presence, but not too many audiophile as such albums. I play them all but not frequently enough to incur too much damage (on a Ortofon 12 inch arm and Dynavector cart). I also have around 600 CD's. Again, thank you all for your experience and wisdom.--Mrmitch

Forgot, the turntable is a TW Akustic Raven One.

Not that this has much to do with what I'm personally after when I go record shopping, but technically speaking, even a genuine SS is no guarantee of Mint condition on the inside -- a wide variety of undiscovered defects are possible, some not knowable unless heard, plus I actually want to PLAY what I buy rather than put it under glass (a horrible act which, if something's Mint, immediately makes it Near Mint) -- so combined with the everpresent authenticity question, I normally take a dim view of dealers asking large premiums above Mint for allegedly SS merch.

No relationship to quality. In the end, it is the individual pressing. In the "golden years", many labels had sufficient quality problems due to making runs in the millions, because popular artists sold to that level. I see this with lots of popular titles. Their answer to quality control was that the end user simply returned these at POS. So you have an equal chance picking up problematic vinyl over pristine copies.