tbf, a lot of vinyl pressed in the 90s was shit. Flipsy discs, cheap pressings. All the fault of the industry though, who were doing their best to kill the format.
That said, some of my most valuable LPs are from the 90s (probably because there weren’t many pressed). Different Class by Pulp, the first two Oasis LPs and Mogwai Young Team all go for over a hundred quid according to Discogs