Actually, Rugged Ridge (aka Omix-Ada) makes a replacemnt TJ Drag Link:
...for about $32, a simple replacemnt link rod, not a strength upgrade, and it uses stock rod ends.
The Rugged Ridge replacement crossover steering kit replaces the drag link, the tie rod, and the ends for $215, and all are beefed up and the croosover design eliminates much of the bump steer:
When you look at the rod cross section, you get an idea how much stronger the rods and rod ends are: