People harp on Windlass scabbards as lacking wood cores in most cases, but when you factor in that this comes in at $100, you'll be hard pressed to find anything as durable and well made as this in that price range.
Even without the wood core, it's stiff, sturdy leather, with a well fitted, strong chape. Because of its 37 inch length, it's suitable not just for the 33.5 inch long Create Your Own Sword designs, but for a wide variety of weapons, including a lot of longswords. This offers a fantastic degree of versatility, and increases the value it offers, as you don't HAVE to use it with the CYOS sword you probably bought it with. As your sword collection grows, you'll still have a way to carry them around to ren faires and elsewhere.