No sorry, you could pay a gold account for every user
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Edit: Didn't see the second question.
I've looked into this a bit, looked online and spoken with a business contact who used to be lead developer for a international poker service. Seems to be a difficult business. There are already laws that make it difficult and more laws are planed in many countries to protect the gambling money from leaving the country. Seems like you need a company registered in Malta to do it in Europa.
Paypal does not accept games about money.
Webmoney does and there are other international services like Neteller and Skrill (I think) that are ok with it.
I really want this type of feature too so even if there seems to be obstacles we are still interested in doing this very much.
We have talked the last days about running the next ladder season with a money prize and try to use that as a marketing feature to attract players. It would still be free to join.
I can only tell that it's high on our want list to be able to play about money.