The Yamaha USA web site shows the same MSRP $6799USD as the day of release. Perhaps Yamaha raised the Minimum Advertised Price (MAP) as shown on the Sweetwater site and other on-line retailers.
All on-line dealers must advertise the same MAP as set by their dealer agreement with Yamaha. They can sell Genos at a lower price, but must advertise at MAP. That is why a Genos customer in the USA should always call different dealers and see what actual price they can get. For example, I called Frank at Audioworks CT and received a fair deal. (I'm a repeat Audioworks CT customer, BTW.)
Sweetwater buys some number of units just to have them in stock. They are so large and sell so much other gear that SW can wait and hold its price at MAP without much financial consequence. That's why you may (will!) find a better deal through a smaller, more flexible dealer.
Retail is a crazy game!
All the best -- pj