Nearly seven years after purchasing my first Aerobee AeroPress (photo) and with daily (or more frequent) use by Danielle and I, it has been replaced. With a new one. After all these years the plunger seal was getting weak and it would frequently leak while brewing. This resulted in coffee spurting out the top unexpectedly, sometimes spraying around the kitchen.
The new one works much better, exactly as I remember the old one being after first receiving it. Hopefully this one will have an equally long life, as it get used every day for brewing coffee here at home; part of a very cost effective system for acquiring quality coffee.