When I sell a used saddle I request full payment and there are conditions such as date it has to be returned by (usually three days), in the same condition it went out the door (no cleaning or oiling), not marked and I will issue a full refund. frlsgirl 01-21-2014 03:34 PM I do not know what seat size I need but the horse's previous owner had a 16.5 saddle on her.