Does this create an unfair advantage for some players over others in a game?
Advantage? Um, Yeah.. However.. the key word here is "unfair".
Thinking it is "unfair" that someone can buy a level 80 character or the right to loot their mythical epic, or more plat than God is very popular. But think about it. Is it unfair that Joe down the road is driving a brand new Jaguar, and I'm not?
If one has the money to spend, is it unfair that they can buy plastic surgery to look younger, thinner, and yeah, better?
Is it unfair that some kids go to school in Kmart sneakers, and some wear Nikes?
It all boils down to one thing. If you have the money, you can have the advantages in life. Why should gaming be any different?
I wouldn't have a problem with EVERY game offering plat and character leveling services. The people who don't fly that way don't have to take advantage of it. Perhaps they can earn special titles such as "Queen of the Hard Way" or "Hard Core Gamer" or "Not a Pansy Exchange Buyer". Whatever makes them happy.
Me? I'll be bidding on line with my paypal to get some plats for that new mount or to pay off that mythical epic ---
But that's a whole other story, isn't it....