Are you considering used?
I owned a pair of JSE Infinite Slopes (two unique patents). Used them for years, they were terrific, my son has them now. I had Model 2, my friend had smaller, shorter version, also sounded terrific.
some used ones for salehttps://www.hifishark.com/search?q=infinite+slope
If you can stretch your budget, these have had upgrades. perhaps make an offer for less. local pickup only, in CT. they would be expensive to ship.https://www.usaudiomart.com/details/649616435-jse-infinite-slope-model-2/images/2694325/