I've had mine for.... a year and a half maybe.  I only wear it about twice a week, but at this point its starting to feel like maybe I should be getting a new one sometime soon. 

So, how often do you replace your packer?  and how often do you wear your packer? 

I used to wear mine every day. Cheap ones I would replace whenever they started falling apart or got too dirty for my liking. That was probably about 6 months. I got a likereal and obviously that holds up better. I've had it for almost a year probably and it has close to no visible wear except for the color fading in a few spots. But I didn't like it as much as the cheap ones because sometimes it felt too heavy. Now I don't pack at all.