Try T31
Not sure how often they come up for sale at TKI, but there are a few for sale at T31 (just 8 NM west). Mine is one of them. We just bought a bigger lot and plan on building a house on it. You can email me david <dot> buono <at> yahoo <dot> com for more info if you're interested. T31 is a great airport with lots of variety, including lots of RV's of course.
Thanks