You won't get a lot of love on this site for it, even being an Omega forum. I have two of them, both black and have been thinking of selling one, but my kids will have to sell the other one because I love the look. Traveler is right, you can feel the rotor when you move, but I like that too. It should have a Valjoux movement.
The price is high, you should be able find these on Watchrecon for $1,500 to $1,000 all day long. Without box and papers closer to the $1,000 side. Keep in mind coming from a brick and mortar store, they have overhead to cover so $1,800 might not be a bad price. Plus you can touch it and get a better idea for the feel of the watch. If they can prove it has been recently serviced, that makes the price better.
Good luck! Mine is one of my favorite watches, which is why I bought the second.