I would love to come in contact with someone who succeeded with setting up an onlinebusiness in Poland.
I heard of a British guy who set up online in Poland, his girlfriend posted it on here actually a few years ago. Anyway he was selling used smart phones, i think he had some suppliers in the UK for iphones and such or maybe he just bought then for used retail in the UK and sold for profit in Poland, im not sure of the specifics. I'm quite sure he sold through allegro though. I also imagine he used to unblock and unlock them.
I thought it was was a great idea, especially when you consider the prices of iphones in Poland. Might be worth looking into used laptops as well.