I believe that Drew's Milita was purchased by Battlefield Miniatures:
I am uncertain if they offer the Polish Paras you seek. You can check out the website. I will say that I've had very good service from Battlefield in the past.
In the U.S., George Gugerrio is the authorized dealer. He's got an online business in Massachusetts. I can get you his contact information, but I haven't got it handy at the moment.