No offense but there is no way in hell that you are going to sell that domain for 4.5 million dollars. You won't even get 1/4 of that. Not in this economy and in general, you will be hard pressed to to sell it anywhere near the $1 million. Sedo recently had a 2 letter double letter domain similar to yours listed for around $100,000. And 2 letter domains are selling on Sedo for 30-40K, sometimes more, sometimes less. But you kinda get the idea of where the domain market is sitting at right now.
Nice domain though but unfortunately, way over priced.
Good luck either way
