Cost of overseas postage in Poland?

I'll be staying in Poland and I promised a bunch of friends back in new york that I'd send them some postcards. Just wondering - how much will it cost to send a postcard overseas in Poland?

Thanks!

2.50 zł ~ 1$

That can't be right - it costs me 3zl to send a letter to England!! Maybe sending a postcard is cheaper, but i don't think so...! Also, one trick i learnt - put the postcard in an envelope (about 5gr from the post office counter) and it gets there faster... why? I've no idea, maybe because they see letters as more of a priority. Make sure you stick a blue airmail sticker on it (szybko - fast).

North America and Africa price-list:

2.50 zł up to 50 grams
3.20 zł more than 50g to 100g
7.60 zł more than 100g to 350g
11.50 zł more than 350g to 500g
21.80 zł more than 500g to 1000g

standard postcard weights less than 50 grams

cennik.poczta.lublin.pl/eng/index.php