SNB-E will be far more expensive than 2600K -- somewhere around $1000, $600, and $450 for the three introductory models. The mainboards will also be more expensive than the average 1155 board. RAM will be quad-channel DDR3.
Will performance be worth the cost? Maybe in a few professional-level applications where getting things done faster saves the company money. For games? No way.
i didnt thought it will be real expensive so i think i will stay with 1155 for long
(any thoughts how long will it last untill it become old and slow for gaming)