You may have better luck listing this under the classifieds in this forum. Also, I wouldn't bother listing out all the basics like traction control, power seats, etc on this forum as many of the members are well-versed in what comes standard. Instead, just list which options the vehicle came with.
For example, I can tell from the pictures alone it does not have the sport or cold weather packages but that you did upgrade to xenon headlights.
$13k seems like a fair starting point.
2015 BMW 435i GC MSport (ED Sept 29, 2014)
2004 BMW 530i (retired)
2010 Lexus RX350 AWD (hers)