Disney Vacation Club - You can rent villas at those properties directly from Disney, or you can rent "points" from a DVC owner.
Yea I got those prices too but I know there are no discounts on those rooms currently.
Historical discounts are here:
http://www.mousesavers.com/historical-information-on-walt-disney-world-resort-discounts/
Looks like they weren't released until July 2014 and were around 15% - 30% discounts. In 2013, they weren't released until later.
I have taken advantage of discounts successfully, but the discounts may not be available for the kind of room you want in the resort you want. My advice would be to stalk the discount announcements and book immediately when they come available.
Also, in the past, I would go ahead and book what you want when you know for sure you're making the trip, and then check for discounts later.
I don't want to discourage you from staying onsite. We have, and we loved those trips. But just for comparison's sake, we now stay offsite for less than $800/week in a 2 br villa. The range of accommodations and prices of accommodations in the Disney area is going to be huge. You are looking at the priciest of those choices. Nothing wrong with that - I have friends who will ONLY stay at the Grand Floridian - but I just wanted to point out that you don't have drop that much money to have a great Disney vacation. Whatever your price point is, you can find something and have a great trip.
I second (or third) the advice to get a guidebook (I like Unofficial as well). You'll have so much more information at your fingertips.