Christ, I'm going to create some controversy with this post now
Let me echo everyone else's sentiments here that hiring out a ratty/slammed bus will only appeal to a very narrow market place, only people in the scene really and even then a very small percentage.
Secondly, in my opinion the reason your bus is not selling (and this is where I’m treading a very thin line) is that at first glance it looks like the front has too many dents and rust esp round the indicator area. Now I'm basing this on the pictures I've seen, nothing more... I understand this is the look some people are after (going back to that narrow market again) and I do understand the look, but other buses that fall into this category include the Slamwerks bus, TV bus, petegee's bus as examples. However these are ratty without damage to the front panels, and otherwise pretty straight.
It could be just that at first glance someone notices the damage/patina assumes this is what the rest of the bus is like and moves onto the next ad. Maybe further pictures of the underside, arches, floor, load area are required, the type of shots GrahamL always supplies with his buses.
Just my opinions though so please don’t take this to heart and please don't shoot me down in flames.
Des