You receive from GS1 only the first 12 figures of your EAN numbers, for the 13th number, the so called check-digit number, as well for the barcode images you must contact external service suppliers like EANnummer.com.
If you buy your UPC/EAN codes from EANnummer.com these barcode images are gratis included.
The use of the UPC/EAN numbers from GS1 can generate a huge potential security risque for your company if you use these numbers to identify production processes, product recipes, storage layouts, staff and visitors identifiers, safety key locations, etc, etc. because they are public information for other GS1 members.
Also you lose your UPC/EAN numbers if you stop paying their high yearly GS1 membership fees.
The UPC/EAN numbers of EANnummer.com are really unique, they will be never recycled, no yearly fee, they stay private as long as you wish and you own them till the end of time.