Peter: We have to calculate very carefully. Sometimes we make do without a margin. And we must manufacture with the utmost efficiency. Our information technology must be optimally well developed. We've been very strong in that right from the beginning and it's true again with our iPad Apps. This helps us save money and we can pass those savings along to our customers by selling them our merchandise at attractive wholesale prices. A certain volume is also important: smaller numbers of units are necessarily costlier. What one loses with a narrow margin can be at least partly recovered by manufacturing larger quantities. No Fields Found.