I start noticing Prada back in high school. Most of my Hong Kong class mates had a black nylon bag from Prada - It is almost like THE school bag!
Of course I also got two black nylon bags from Prada, one messenger and one should bag. I had use them throughout my University, and I finally retired them after I start working.
I think I did get a good rate of return from my Prada Nylon bags.