I am a Realtor in Austin and also i own a Lake House on lake Buchanan. Horseshoe bay is really nice but it comes at a price. We purchased our lot in the early 90's built one 2-2 home and a small 2-1 on the water. Purchase price was 80k for 2 acres, appraised for 850k last year. Disney purchased 10,000 acre ranch on the river up from the lake house for VIP retreats.
Wonderful area with good prices if you look around. You can still find good lots for the 100's on the lake.
We need some rain!