Not an hour ago, I went through a folder of receipts for my radio electronics and found a November 9, 1981 receipt for my Radio Shack .64 wave base station antenna. It cost me a whole $49.95 back then. A Super Penetrator, which is the antenna it is based on, sells today for something like $189.95.
I currently own an A99, a Workman Bandit (A99 copy), an IMAX 2000 and two versions of the Shakespeare Big Stick. My experience is that the IMAX outperforms them all. It does not perform as well as my old .64, but still holds its own.