Alessandra - I'm glad that guy posted about his cash out experience. I had (rather foolishly) assumed that you were British. You used the word "cheque" rather than "check" in your original post, so I gathered that you were not from the States, and therefore jumped to the conclusion that you were British. At least guy has put an Australian perspective on you original question.
Guy - I too play on iPoker, and my experience of cashing out from there has been very different from yours. I have accounts on 2 different ipoker sites
so far (bonus hunting of course). My current site is VC (which is a UK based chain of betting shops - albeit the poker arm is Gibraltar based I think) and Betfred. I was able to cash out from Betfred via Mastercard
with no problem. I don't think it's the poker site so much as the credit card that's the problem. Mastercard / Visa in some countries seem to be much more relaxed about poker sites deposits cashouts than others. I guess Aus. is one of the more cautious ones. I am able to cash out from VC at no cost by cheque, and get the cheque within 48 hours. Also, the deposits that I make are in £ sterling, rather than $. Again, I guess this is because VC is British based.
It's obviously a very varied situation with regards cashing out from country to country. I know that our USA friends have trouble (including I believe with Neteller) due to their absurd (and somewhat hypocritical in my opinion) political leaders who apparently consider poker to be a sin. Such a shame.
Again, apologies for any misleading advice that I gave to Alessandra whilst of the misguided opinion that you are British!