I don't really know. 1 american dollar = 3,03789777 złotego polskiego.
So 30,3789777$, but you don't want cents so badly.
I don't know if it transfers to dollars. Does it? If yes that's good and I may think about buying some tc.
Paypal automatically converts currency if you send to a business but I think you shoul fiddle around to try and get paypal to use USD format when transferring.