The trick to embroidery is all in the digitizing of the artwork.
Due to its complexity with digitizing artwork; embroidery tends to have a longer turnaround time than most garment imprint methods.
Embroidery is known to be the most durable imprint method; it is why the cost to embroider an item can be a little more than other imprint methods.
Note: Any man made material can run the chance of bleeding through the fabrics.
Embroidery offers the look and feel of a professional/corporate look. Whether it is for your field sales reps or your in store staff; having a garment embroidered creates a unique sense of establishment within a business setting.
Most people associate embroidery with a higher value in either a brand (company) or an item they are looking at purchasing. Use this to your advantage and leverage the retail side or the perceived value when talking about a company's brand.
The durability of an embroidered item is greater than that of any other printing method onto a garment/fabric. This along with the presentation and added value is what makes this method so popular.