There are not a lot of California Cabs out there of this quality which can be obtained for $20-25. The quality starts to suffer.
I will say that in a good vintage, The Robert Mondavi Napa Valley Cabernet Sauvignon is pretty close. Generally obtainable for $25+, and in a good year can be quite good. However, overall it is made in a similar style each year.
Now that you know that $65-70 will get you something like Caymus, you are probably wondering what $100 might get you?