Ends in: 12 years (after which time, recertification is required) $30 is the average price. The engines that power grills and heaters, as well as propane tanks, have a 12-year shelf life from the date of production. After that, they need to be recertified every five to ten years. Weather exposure can cause corrosion and other deterioration over time, which can be dangerous.
Ends in: Two Years $15 is the average price. Fishing lines, the unseen thread connecting the angler to the catch, gradually deteriorate over time. They only last for two years on average, and during that time, stress and sunshine can weaken them and increase the likelihood that they will break at an important time. The integrity of your gear is ensured by routinely changing your fishing line, particularly before major expeditions or after catching a sizable haul.