Affordable Aquablade Substitutes?

The first body suit that came out, or at least the first one I ever saw/wore, was the Speedo Aquablade with its alternating stripes of Teflon coated (?) and water-permeable material. It was replaced by different iterations of the Fastskin I and II and now ProSkin, with a bunch of other companies making their own versions. I realize all this is at least a little bit a matter of personal choice, but I have found that yesteryear's Aquablade has been the best for me for long distance events--especially the 1-hour postal swim. The reason is it's exceptionally light in the water--it makes me feel I am floating along without any additional weight. Fastskins may be slightly fasters in shorter events, but they seem to me to get heavy once thoroughly soaked. Anyhow, I do prefer the Aquablade for long swims. You used to be able to find these fairly cheap on the Internet--in the sub-$80 range for the knee skin model. But I can't for the life of me find any of knee skins at all anymore, not even a woman's suit (which is how I got my first aquablade.) The ProSkin is supposedly light like the Aquablade was, but it's so expensive. I haven't tried any of the other company suits, like Tyr, etc. Does anybody out there have advice as to where I could find an Aquablade kneeskin these days, or, barring success there, what the best cheap substitute is (i.e., well under $100 and using similar technology)?