Go Gamer has it for a lot less and an April 19th date.
http://www.gogamer.com/IL-2-Sturmovi...VVviewprod.htm
Amazon also has it for less than Ebay .April 26th date.
http://www.amazon.com/2-Sturmovik-Cl...1109768&sr=8-1
It is being released in Europe on the 31st.Maybe Ebay is importing it.
Be careful.The game is region locked and will not activate outside of its region.