I also have several Patagonia items that are over twenty years old and still going strong. Since I live in P's home town, I have been able to take advantage of sales - the best is a 20 year old fleece jacket that I bought for $15, and it is even the best color, fire engine red (15 degrees warmer than any other color).

Remember, Patagonia started out as a cottage industry, except Chouinard didn't even have a cottage, just a pickup truck.