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

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.