Hi Bebop,
With the Tyros far out selling the KORG PA1X it surely can only be a short time before the the prices level out,
When I bought my Tyros from Whitley bay organs in the UK the average price was about £1,899 yet, I eventually secured a price of £1,745. When I bought my KN7000 the average price was about £1,699, I was lucky like many others to secure it for £1,425 from Rimmers music.
I'd be looking to pay no more than £1,850 for the PA1X and when Yamaha release the new Tyros 2 in the summer I should think this price could drop another £200.
I think the KORG PA1X is the closest keyboard out there to the KN7000.
Kind regards
Peter