Buying Just the Ramen Flavor Packets?

Suanne asks:

Do you know if the chicken spice (packet) is sold separately from the noodles?
If you do, where can I purchase this from?

The closest I’ve ever been able to do is buying chicken bullion or beef bullion. I prefer to buy the powdered kind rather than the cubes so that I can control the amount. Has anyone found a way to buy ramen flavor packets or ramen seasoning?