This hi-res version of the Ragatromo's Shop of Mirrors map was originally included in the adventure Blades of the Stygian Masque from issue #219 of Dungeon Magazine.
In one simple download you get both the DM and players versions of the map as well as an un-gridded rendering that's perfect for use with any virtual tabletop software. Sized at 3450 x 4200 pixels, it's perfect for home printing or screen display. Purchase it now to help run the adventure or use it on its own and spice up your game night.
P.S. For a quick and easy tutorial on resizing digital battle maps for printing and use with miniatures, make sure to visit Schley's Tutorials.