According to the inflation calculator, my JBL L300As would cost $7,838.74 today. After attending several high end audio events, I have absolutely no desire to replace them with anything new in the same price range. Hard to top the overall dynamics of the compression drivers and the impact of the 15" woofer. I have upgraded the original caps with audiophile quality ones and have replaced the terminals with modern, high grade ones.
I used to have four L100s in the mid 70s, connected to a Marantz 4400 quadriphonic receiver. They were awesome for trowing parties. Those 12" woofers kicked butt. But I also had a pair of Altec Voice of the Theater speakers connected to a more powerful Marantz integrated, at the same time, and those dwarfed the L100s. There's a certain quality to 15" woofers paired with high frequency horns.