Even though it was mainly created to show off the innovative, object-oriented Magnetic Windows interactive fiction interface, Wonderland is also a wonderfully designed, stunningly illustrated, incredibly polished, and very well written text adventure; a game I consider to be one of the finest moments of Magnetic Scrolls. Also, a game the Digital Antiquarian recently, lovingly and very thoroughly covered here.
Oh, and here's a fine Wonderland (Atari ST) eBay auction. The game comes complete in its original box with its hefty manual, four 3.5" disks, map, poster, quick reference guide, and Atari ST specific instructions leaflet.
Seller ships worldwide.