They may cost less, but that does not mean that low-cost home gyms are of cheap quality. One advantage with home gyms is that they're used by a limited number of people, you may even be the only one using it, so the rate of wear is slower. At the very least, expect your home gym to last 5 years. The lifespan of the gym depends on what type of equipment it is. For example, weight plates and barbells can last a lifetime, a bench can last 15-20 years, and boards and stationary bikes can last 10-20 years. Gyms with few moving parts generally outlast those with many moving parts. If you maintain your home gym religiously, you'll extend its lifespan.