No. We have no control over the price being asked, nor the condition/configuration of the vehicle for sale. We also have no way to ensure that anyone will want to buy any specific type, or brand of vehicle. Therefore, we cannot give you a guarantee we will sell your vehicle. That risk has to remain with the seller.
However, the sooner you list your horsebox, the sooner it will be seen by the interested visitors who come here every day to buy horse trucks and horse trailers.