+1. When in Poland I use Allegro all the time - way more reliable than Amazon.pl. Not as good as Amazon in the states though.
My friends who moved back from the Bay Area still prefer to use Amazon, but they use Amazon.de instead - similar shipping times, and much better selection and reliability.
Not sure if this is still the case, but Amazon.de used to use fulfillment centers in Poland to deliver to Germany. So if you're in Poland and ordering from Amazon.de, your order could very well be delivered from Poland to Poland.
In fact there were 3 massive Amazon fullfilment centres in Poland before Amazon.pl even launched lol. It's a weird(but very interesting) market with its own big players that neither Amazon nor ebay managed to compete against.
My friends who moved back from the Bay Area still prefer to use Amazon, but they use Amazon.de instead - similar shipping times, and much better selection and reliability.