Buying Polish DVD's

Hey guys, I'm about to buy a region free dvd player so my girlfriend and I can watch both my American dvd's and we can rent and buy Polish dvd's and/or American dvd's dubbed or subtitled in Polish. Can anyone suggest to me a good website where I can buy dvd's dubbed into Polish and/or with Polish subtitles?

I usually buy at:
1/ merlin.com.pl (the biggest Polish online shop for books, CDs, DVDs)
2/ vivd.pl (a little cheaper than Merlin, but sometimes your order goes slowly, they say the DVD/CD should be ready after 2 days, you wait a week, they say a week, you wait 3 weeks, but it's not a rule, only applies to some less popular titles, they simply have bad communication with their suppliers, I guess)
3/ empik.com.pl (I hate the layout of their site, but sometimes they may have a good price)