Spotted this in Woolworths today. Deal in available in shop and online so you could use Quidco. Cheapest I've seen these.
Official reproduction of Darth Vader's lightsaber from Star Wars: The Empire Strikes Back
Enhanced glowing red blade with realistic power-up and power-down light effects.
The power-up and power-down light effects are produced by a string of 64 super-bright LEDs that ignite sequentially inside the blade.
Features five motion sensor controlled sound effects digitally recorded from the movie: power-up, idle hum, swing, clash, and power-down.
Blade has 3 built-in motion sensors for super sensitivity: 2 for detecting movement and 1 for detecting the impact of the blade.
Durable metal hilt looks and feels like a real lightsaber. Sturdy blade is permanently attached to the hilt.
Approximate dimensions: 112.5cm (44.3") L x 5.6cm (2.2") H x 5.3cm (2.1") W.
Comes with a custom-designed display stand.
Darth Red and Anakin Blue Lightsabers use 3 AA batteries (not included).
*****Unfortunately out of stock online at the moment so sorry about that. You'll have to try your local branch if you want this one***** - deal_or_no_deal?