Complex sentence: Busch Beer is a typical American lager but generally considered a "sub-premium" beer as it is cheaper than Budweiser and Coors and has a lower alcohol content (4.60% ABV).
Split into simpler sentences: Busch Beer is a typical American lager and a "sub-premium" beer according to the standard of price: it is cheaper than Budweiser and Coors. It also has a lower alcohol content (4.60% ABV).