Soundwise every Gibson LP is different, EVERY. For me, it really doesn't matter if this is Les Paul Custom, R reissue or 57 RI. I played few R models on one amp and some of them were true rock or blues axes, but there was one R9 which was metal as fuck, it was fast, tight, CREATED for metal. Seriously, if I had that 6500 euro I'd take this guitar immediately. I bought LPC for myself later but not because it's LPC and it's supposed to do something, I bought it because that particular guitar was also "metal". Well, it isn't as metal as that R9 I played before, but still.
All high end Gibsons (LPC, R RI, 57 RI) are pretty same when it comes to materials they are made from, it's just mahogany body with maple top (I know B7 doesn't have maple top, it's all mahogany body), mahogany neck (Zakk Wylde LPC has maple neck) and ebony or rosewood fingerboard. Cheaper models has different fingerboards. Custom shop models differ in pickups, potentiometers, capacitors etc. but it actually doesn't mean anything. Again, that R9 I played had low output alnico 2 pickups and was way more mean than LPC with high output alnico 5 pickups I played later.
Richlite fingerboards were introduced to Custom Shop models in 2012 but they were used earlier too (Buckethead model).
Good price? There isn't such thing as good price. If you find the guitar that suit your needs you pay the price the man wants, because probably you won't find another guitar that sounds the same.