Why have the prices of Marantz and Sansui speakers have gone up so much? Whyyyy???

I collect and love lots of vintage equipment and can honestly say that Marantz and Sansui speakers are the worst of the lot. 
I’d take realistic or technics over those and that’s not saying much. 

I've got a pair of Marantz Imperial 7s driven by my Kenwood L09ms and using a Marantz 2275 as a preamp and an oppo 95 for a source and it's audio nirvana.

My friend gave me a set of Realistic speakers and they sound like ass, but I'd like to give them to you.  They might be good for you.

I find alot of newer speakers quite ear fitiguing. I am not talking about higher end newer speaker's more $2k.

My isobarik linns, celestion ditton's, Revox Agora b and Infinity Kappa 8' impress everyone that hear them. 
Forgot about the AR9 I recently sold. 

actaman ,  Pretty will established that if you hear a LOT of classical music
you brain will fill in the same sound you heard at 16 at 86 .

Well I rather like my old lattice grille Sansui speakers. Admittedly, they're all garage sale or Craigslist items of questionable parentage and minimum cost but given good tube amplification they can sound glorious. that doesn't mean that I don't avoid fancy pants speakers, it just means that I don't delude myself that you must spend a boatload or it can't sound good. I've had plenty of expensive gear that wasn't all that great.My old Sansui speakers are fun. That's the whole idea.