Well, I don't think it'll get much cheaper. The only cheaper transatlantic fare sales I've ever seen are for Thanksgiving/Xmas and the Summer (July/August).

But as to whether $2500 is a good price for UC, that's highly subjective and personal. If you can sleep fine on a recliner seat with 60" of pitch, you'll probably do much better on MaxJet. If you like the lie-flat-at-an-angle, then try Silverjet. EOS is probably more than $2500.