If you look at Suzuki's website you'll see all their prices are up now - two price rises in the last few months (the X is now supposedly £5999! It was £5499 around May when I bought mine, then went to £5699 in July and now £5999). Mind you, nothing like the stupidity that Yamaha is displaying.
I agree with all the comments here. I bought an X and put the Givi luggage on it that I wanted, centre stand, heated grips, MRA Vario, Madstad, all the crucial Cymarc stuff and it's still cost way less that Suzuki's current list on the X. Not sure I'd have been prepared to stump up £7300 for the Xpedition but for me it's just good to see such a positive review of the Strom generally.