The e-tailer says the chips are expected to be in stock by September 7, 2018.
No official pricing is known so it's unclear how accurate this pricing is:
The 689€ price for 9900K and 539€ for 9700K may be quite shocking and unexpected. The best part is that is even without VAT. So the 8-core i9 part will cost 833€ if you decide to preorder it now. Not the greatest deals around, but at least you can say to your friends you have i9-9900K coming to your home.Actual MSRPs will probably be lower... but this is the first site taking pre-orders.