Actually, the key size on the PA50 is longer than the PA80. It was the now discontinued PA60 which had the smaller key size.
Here in the USA the Manufactures suggested retail price for the PA50 is $1299 and the MSRP for the PA80 is $2650. The Street prices are $999 for the PA50 and $2150 for the PA80. Prices went up last January for the PA80 and the newly released PA1X keyboards because of our weaker dollar vs the Euro.
I have sold dozens of PA50's and haven't had any problems from customers because of the keyboard being made in China. Actually, with all the China made mixers , keyboards, guitars, etc. etc., I would prefer all my Italian made keyboards be made in China. I would probably see fewer repairs!
George Kaye
Kaye's Music Scene
Reseda, California