Solidarność was funded by the West, though you may credit Polish/Eastern European capture of US foreign policy and the Polish Pope, too.
It is true of course that they were the most persistent and brave. I don't think it would have been possible in East Germany for example, which ran a tighter regime until Poland managed the peaceful revolution.
I'm sure that some people claim that but I would be grateful for evidence that solidarnosc received significant material support from the west.