I live in Romania...and i never experienced a lag. But i hope for a EU server, because when i play, the americans are asleep.
Another problem is the payment...today the parity is 1.36 for EUR/USD . The payment should be changed on the paruty. The monthly fee is not ex*****ve..after all 15 eur a month its a small amount even in Romania, my income is 7 euro an hour..so its not a big deal.
Make 2 servers, US and EU..and eveything will be fine.