first of all, hudson didn't decied the high price which it is selling nowadays. it's always given to its small quantity and high demand. it's a collectors item as well as a superb game in one. it's everobodys own decision if some one wants to spend the high price or not.
in my case, it always gives me more pleasure to play it as an original.
the game is the absolut madness in technical point of view. there is no other competitive game like this on the pce. it shows almost any technical abilites of the system (hard-and software wise) in one compact journey. zooming, scaling, rotating, pinching, rendering, pre-rendering, pixeling etc. anything is hsown up in this game, altought a lot of those effects are pre-animations only, but things you never thought it will be possible on that little and old casket of hardware.
one disturbing point is, that the game sometimes seems to be unfinished (> intermission screen between levels) and a big mixure of different styles (of course due to the time travels
)
anyway i like it as hell, altough there are quite better shmups in gameplay point of view on the PCE just like GoT, WoT, Seirei senshi spriggan..