Seems like a reasonable price. I got 15k for my 2003 Imola/Black cab but with twice as many miles. Mine also did not have Nav, SMG and some other options you listed.
If you want to sell it quick, put it on ebay. No better way to determine its worth than to let the free market run its course.
Good luck with the sale.
2008 Interlagos Blue E93 M3 - M-DCT
2011 Salsa Red Jetta TDI Sportwagen - DSG