You could always create your own personal Expo by checking out the web sites of some of the companies exhibiting at Photoshop World, and some of their specials:
Artistic Photo Canvas
Rebates at B&H Photo!
Adobe Special Offers
New Corel Painter 11 + New Wacom Intuos4 Pen Tablet
mpix (check their blog for specials)
OnOne Software (save $200 through March 25th)
Wescott ($500 in free product with Strobelite kit)