Okay, are you a Kingdom Hearts I and II fanatic? I bet you're going to cosplay (or for you girls, crossplay) Sora. Well, if you're going to do that, you can't go without a Keyblade.
To be real honest with you, it's almost always cheaper to create your own Keyblade and let me tell you why. If you hire a prop commissioner, they will charge you big amount of bucks for a Keyblade. You know the term "you get what you pay for," that also applies to cosplay as well. So, if you're the adventurous type and want to try to create a Keyblade, by all means, go for it!
This guy by the name of featherweight has a WONDERFUL How-To Tutorial on the Keyblade. Now, it mainly shows you how to create the Kingdom Keyblade, but I guarantee you folks, you're going to be satisfied^_^ This person even gives out a visual step by step to follow along with the typed tutorial. I'm in the process of creating my own Keyblade, with some arrangements due do unknown places to purchase particular materials^^; Anyway, here's the link:
Good luck to ya folks, follow the instructions, and spend wisely^_^