There are many reputable Watch Dealers on the Internet who offer Accutrons for sale. Their stock is continually changing, so you may have to check back with them often to find the one you are after. Here is a selection:
Yeah - right!
Darlor Watches - Montreal
James B. Baril - Florida. Great selection of all models on his web page. Check it out!
Bogoff Antique Timpieces
Old Father Time - The very best selection of Spaceviews and other Accutrons you'll find. All types of Accutrons repaired too!
The Watch Store
The Watch Web
Time Machine - specializes in Railroad watches, but many others as well.
Watchdoc- Watch Sales and Repair
Pieces of Time