Startup cost: $0 - $100

Survey Junkie is a platform where users can earn money by taking surveys. On the low end, you can start with no investment as it only requires a device with internet access, which most people already have. On the high end, someone might invest in a more reliable internet connection or a dedicated device to ensure they can complete surveys efficiently. There are no hidden fees, and the platform is generally considered low-cost. However, some users might choose to spend on productivity tools or apps to manage their time better, but these are optional.