Just a heads up for anyone looking at this thread later, the Steelseries APEX 350 appears to be discontinued too, as it wasn't listed on the main keyboards page on the Steelseries website, however a google search found a product page link https://steelseries.com/gaming-keyboards/apex-350 with a note on it "This product is no longer available."
So stock may be limited/running out if you were looking at this keyboard.
I'm personally not going to get one though, it looks interesting though, I might go down the route of getting a Cherry MX Brown(or equivalent switch) keyboard with a secondary macro board, as there doesn't appear to be any all in one items like the original Logitech G15 or original Corsair K95 anymore.