You can save money this way and still enjoy a good tire. The last three digits of the serial number shows the week and the year of manufacture. If you don't understand the code, ask. A tire made in 2001 shows 232001. Never buy tires over two years old.
Tires deteriorate over time.
The rubber dries out, making the tire prone to failure. Just because tires look good, is not a good reason. Stay away from over-sized tires. You sacrifice traction on smooth surfaces with this tire, especially in rainy weather. This is a good buy for the money.