If you like RPGs and have a friend to play with, its worth your 600 Points.
The game is surprisingly deep, with over 20 weapons that I've discovered already(And I've barely been through any dungeons yet!) and a similar amount of Monsters, along with Inns, Shops, Boss Battles, Two-player, and many other features. I recommend that you atleast give this game a look if you're bored, it may not match up to some of the other Virtual Console games but its incredible for a game from a console that had many games that had half the complexity of this. Its no Shining Force, but its pretty fun for a Turbografix game. Its quite possibly more complex(And quite possibly more fun..) than the original Metroid even.(I'm not dissing Metroid or anything.. I actually love the Metroid series)
If you have a friend to play with, you love RPG Games, you have a few hours to spare, and you have 600 Wii Points then definitely buy this game.