We have had enough demand for this style bench over the years, that we are now offering a different style ambidextrous shooting bench. The "U-shaped" design allows one to shoot from directly behind the rifle, allowing for better straight-line recoil than shooting from the side of a bench. This is more important with very high-recoiling cartridges, but some shooters just prefer this design. It also provides more space for those who want to keep other items on the bench while shooting, such as a chronograph.
We have spent a lot of time with the internal design of this bench to remove as much weight as possible while maintaining the full strength Legacy Benches are known for. The overall weight of this new design is still under 50#, including the adjustable legs.
The increased cost of this bench is simply because the legs and the top have to be be shipped separately to be cost-effective.