In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Viega does sell bronze fittings. They are specifically designed to prevent "dezincification". This is the loss of the zinc in the metal alloy brass fittings are made of. The zinc dissolves leaving behind a very weak matrix of copper. The fitting can leak and crack. Also there is a problem of "meringue" buildup inside fittings, blocking flow. Google "dezincification" if you want more. It is a serious problem - don't ignore it if you plan in being in business for 10+ more years. Many, many law suits of arisen from this problem.
Viega is a German company. At least some of their bronze fittings like manifolds are actually made in Germany. Regardless of where they are made, you can bank on the fact the Viega brand fittings are "the best". Being a German company, Viega undoubtedly has very good quality control on parts.