*Update: So I think I may have the shipping calculator figured out. I'm also now offering free shipping within the continental United States for orders over $99.00
Dating back to the Succession Wars the 45 ton Hatchetman was the first mech that was designed to carry a physical weapon. This weapon deals out a point of damage for every 5 tons of mech weight. Dropping 9 points of damage to a single location with no heat build up makes this an effective weapon. Coupled with 2 medium lasers and an AC 10, the Hatchetman should not be ignored.
More information on this mech can be found at Sarna.net