TC Mag spotted preorder prices of Sapphire's Radeon HD 6850 and Radeon HD 6870 graphics cards at a Dutch webshop. According to the info, the Radeon HD 6870 is priced at 255EUR while the Radeon HD 6850 carries a 189EUR price tag. Both prices include 19 percent VAT.
The Radeon HD 6850 GPU and memory clocks published are 725 MHz and 4000 MHz, respectively, while the card's price tag is €189 ($265.7). The conversion probably isn't an accurate estimate as to how much the card will cost in the US but we just have to underline the higher prices here in Europe.
As for the Radeon HD 6870, it has the GPU/memory set to 900/4200 MHz and costs €255 ($358.5).