prices on Stern website have been updated, there is no indication nor comment that the prices are going to go up to $6800 by next year o the pro, and all of these titles have not been produced yet.
You can buy the game now from Stern's site at the posted prices which most likely are going to be produced next year and therefore impacted by new insiders thing.
The price increase today is $300 with the insiders thingy, which seems to be also optional?
In other words, why would Stern mislead their customers with this information, to order a game now that will increase in price next year?
All that to say, maybe the price increase is just for Godzilla due to it being a Japanese franchise/license and it costs more...??
I might be entirely wrong but, might it be possible that it is just all an speculation and the prices are only increasing by $300 for all models as already stated in Stern's site?