Hmm. If you're looking for a sharpened sword that looks like the Halo Energy Sword, I think you should immediately check yourself in.
What... are you gonna cut your weeds with it? Conventions won't let you through the door... so you have to keep it in your house or thereabouts..
Not fun... not an Energy Sword. ABS connecting two stainless steel blades? Ouch! They're not going to stay parallel. I make plastic on plastic Energy Swords, and that's a challenge... nevermind Steel on plastic. The weight difference alone will mess up the alignment of the tips of the blades.
Does it glow? Does the blade pattern or handle detailing match any of the Halo games?
I think these manufacturers are trying to sucker some Halo fans with an unliscensed un-canon product. I'd recommend to make your own, even for that price.
But, I'm biased, don't listen to me.