Well, it was recently re-released for the Clone Wars, so maybe that first production is higher on Amazon because of that reason. If you have all the pieces in the original box, I’d say 20 dollars because the new one sells for about 30+. If you wanted, you could probably get 25-30.
Best of luck.
-Chuckles

That price is high because some greedy person thinks it’s rare.
Used one would probably be about $5 — after all we can buy brand new lightsabers for that much at Walmart