I echo the sentiments of others like @asimbana and @bb254 that QA/QC is necessary and is crucial to the success of products. Spending extra time and money and going through QA/QC processes/methods isn’t ideal, but it is necessary to lower risk. For example in 2010 Johnson and Johnson underwent a quality control reorganization after both the House Committee of on Oversight and Investigations and by FDA’s office of criminal investigations found violations in two McNeill plants. Due to this McNeill had to recall millions of bottles of adult Tylenol because a byproduct of a chemical used to treat wooden transport pallets had leaked into the products, resulting in the moldy smell.

Then 3 months later McNeill had to recall over 136 million bottles of children’s liquid Tylenol because they might have contained too much of the active drug ingredient or foreign particles.

The Johnson & Johnson’s recalls and plant shutdown cost J&J over $200 million in sales that quarter and lost over $600 million in annual sales because of the plant closing. $600 MILLION. So yes, there is a Cost of Quality, but there is also cost and risk if not followed properly. Even the big companies like J&J can suffer and have a hit to their bottom line if the QA/QC aren’t functioning properly.