Hello Captian Wessam,
here is a used one, the price for used ones is between 4500 - 10000.-€:
http://www.mobile.de/Alpina-B11+3,5-...209_NSR43.html
Nice one:
http://www.mobile.de/SIDuI2g5nqCbACd...1111201493607&
B11 3,5 735i (E 32) 184/250kW/hp 3430ccm 330Nm 6Cyl. 01/87- 09/87 35 build
B11 3,5 735i (E 32) 176/240kW/hp 3430ccm 310Nm 6Cyl. 01/87 - 09/87 76 build
B11 3,5 735i (E 32) 187/254kW/hp 3430ccm 325Nm 6Cyl. 10/87-12/93 221 build
B11 4,0 740i (E 32) 232/315kW/hp 3982ccm 410Nm 8Cyl. 05/93 - 02/94 7 build
Greetz,
Tyler