Well, natural wood has imperfections and different densities. This means that stains take on a life of their own depending on what is going on with a particular section of any given portion of the wood. Plus real wood will have slight movement and texture that can not be replicated in a PVC wrapped product.
Also, our two favorite brands of wood blinds make some of the most beautiful stained wood blinds I have ever seen. I personally like them better than any other brand I have seen and they are not the most expensive - they are mid range price. Anyway, there is just just something warm and inviting about a natural stained product that technology has not yet been able to replicate. They can come close, but for the discerning eye - wood is the way to go when wanting a stained product.
We would love the opportunity to consult with you on your wood blind project. And, be sure to check out our online cost calculator for a rough estimate.