Best and cheapest telephone mobile card in Poland

Oh, sorry for open another topic... I had forgotten to write this in the anothe topic...

I'm from Spain, and I want to buy a telephone mobile card in warsaw. Which is the best company?? the cheapest? how much is it cost send a sms or call to spain?? ERA, IDEA...

This is for the prepaid "Era Tak Tak":

2,20 zł z VAT za każdą minutę połączenia wykonywanego z Unii Europejskiej

2.20zł with VAT for every minute of outgoing call inside of EU

1,10 zł z VAT za każdą minutę połączenia odbieranego w Unii Europejskiej

1,10zł with VAT for every answered call inside of EU

Odbieranie SMS-ów zawsze jest bezpłatne, a wysyłanie SMS-ów na całym świecie kosztuje zawsze 1,95 zł z VAT

Getting smses is always free, and sending them costs 1.95zł with VAT all over the world.

Vat is a standard tax, and if i'm not wrong it's 22%

Holy smokes, 22% tax!

Is a 'mobile card' the same as a SIM card? I will be staying in Poland for about 2 weeks, and my current SIM doesn't have international service. How much does it cost to buy the SIM, I've heard about 20zł? After my stay in Poland I'll be visiting some other countries as well, does it have international service?

a sim costs a couple of zlots - i bought a sim fo 9 zl that included 7 zl credit

I have got a Heyah SIM. I bought it a few months back for 9 PLN. Recharge coupen available for 5 PLN, 25 PLN ...