Just for reference and fun (and to make a few AH member's heads explode) here is Stereophile's latest list of recommended loudspeakers. They consider "full range" as reaching 20Hz and among their "A (Full Range)" ranking, the cheapest pair is the Golden Ear Triton Reference for $11K, the most expensive is the Wilson Chronosonic XVX at $335K.
Loudspeaker Systems
www.stereophile.com
Note that the Perlisten S7t ($18K) that was so favorably reviewed here on AH is considered class A, but is under the "Restricted Extreme LF" (i.e., not full range) category.