I think you will be hard pressed to find anybody half-way serious about shooting clay pigeons (sporting, skeet etc.) who uses a double trigger. Since that is the only semi-growth area in the shotgun industry (especially sporting), the demand (and therefore higher prices) in used or new doubles is for heavy, long barreled, single trigger over unders. Like it or not, I don't believe that light guns, with shortish barrels, double triggers and splinter foreends (i.e., typical game guns)are that much in demand. This is certainly a change from 30 plus years ago, when I remember unloading a nice Parker, because it had 30 inch barrels and a beaver tail.