Walmart offers the Star Wars Darth Vader Ultimate FX Lightsaber, model no. 32720, for $25 with free shipping. That's $5 under yesterday's mention of a similar lightsaber and the lowest total price we could find by $21. Sales tax is added where applicable. Not to be confused with the much more realistic (and expensive) Star Wars Force FX lightsabers, this model is made of plastic and features motion-sensor controlled sound effects and "battle-clash" lights and sounds. Three AA batteries are included.