Yeah, it might cost that much (for the one you want), but keep in mind, that what you're building won't be even close to that guitar.
If you compare your end result with a PRS at the same price level (as your build ended up costing), you'll see that their guitar will be WAY better than yours.
I'm not trying to discourage you from building, but you have to realize that it won't be cheap to build a guitar, and the chances of it turning out great are very small.
Not impossible, but small...
It's been said before, and needs to be said again:
If you're building a guitar thinking you can save money, think again.