The 1.03’s from PST are cheaper because they only make one size. So, their production numbers are higher and the result is a lower per unit price because they use a forger that does large production runs. Most of the companies making larger bars (Firm Feel, for example) sell a bunch of sizes, and basically custom make small batch runs of the bars. Which is the more expensive way to do it. The smaller bars, stock size bars are more expensive because Mopar Performance charges a fortune for everything. And most Mopar folks will pay a fortune for anything that looks original, even if it means having lousy performance.
The Bilsteins come with new bushings and sleeves, but not new washers or nuts.
