Am I missing something? Sounds like he (CA) tried to make the deal happen, at a good rate, then quickly determined that for whatever reason he couldn't make the deal happen. Whether it was preference or compulsory he let you know within a very reasonable amount of time (10 mins)? Maybe he should've thought it through better and posted the OOS details on the ad, but we all make mistakes.
2008 335i Vert
Monaco Blue/Saddle Brown/Gray Poplar
6MT,ZSP, ZPP, CWP, Sirius, 6FL, VM-715 Hyper Silver