Sell me your stocking

I have a fetish for used and well worn pantyhose but with a little twist...
Wondering if there are any providers that would be willing to simply sell me their used, worn, and perhaps soiled pantyhose?  I will be very generous AND I will replace the pair you sell me with a brand new pair.  Not looking for much more than that.  Perhaps we could meet and trade in public or we could set up something more private.  Very open-minded but trying to stay as discrete as possible.  

Thanks,
Pantyhoseboy!