Beginner friendly: Easy to start

I’d rate it a 4 because selling used items is relatively straightforward and accessible for most people. Platforms like eBay, Facebook Marketplace, and Craigslist make it easy to list items for sale with minimal setup. Many people already have unused items at home, so there's no initial investment required. The main challenges are pricing items correctly and dealing with potential buyers, but these can be learned quickly through online resources and practice.