You know, people always say that the NG.com guides are out of date / useless. I just went through my JPN AES games (see list below), all purchased within the last couple of years. Only one game did I pay more than the upper limit, and quite a few were purchased below the lower limit. Granted, US AES has gone nuts, but in many cases the guide is still pretty accurate for JPN games, even in 2015.
Art of Fighting 25 50 C
Art of Fighting 2 25 45 C
Fatal Fury 2 20 40 EC
Fatal Fury Special 20 45 EC
Fatal Fury 3 60 95 C
Fighter History Dynamite 30 65 C
Kabuki Klash 150 190 U
King of Fighters 94 50 80 U
King of Fighters 95 60 85 C
King of Fighters 96 80 110 C
King of Fighters 97 ß90 120 C
King of Fighters 98 ß100 140 C
King of Fighters 99 ß100 150 U
King of Fighters 2001 ß125 145 U
Last Blade 120 160 U
Mark of the Wolves 350 425 U
Real Bout Fatal Fury 80 120 C
Real Bout Fatal Fury Special 100 150 U
Real Bout Fatal Fury 2 130 175 U
Samurai Spirit 20 45 C
Samurai Spirit 2 20 40 EC
Samurai Spirit 3 65 100 C
Samurai Spirit 4 ß220 280 R
Samurai Spirits Zero 325 350 U
World Heroes 20 40 EC
World Heroes 2 20 40 EC
World Heroes 2 Jet 25 50 C
World Heroes Perfect 160 220 R
Honestly, if you pay much more (eg. 200%+) than the NG.com guides, you need your fucking head examined. Stop being part of the problem.