20 tips and tricks for selling your stuff online

When it comes time to declutter, many folks are hoping to make a little extra cash on the items that they no longer — or never — used. And thanks to platforms like eBay, Mercari, and Poshmark, it's easier than ever to sell your stuff online in a safe way. 

Looking to make some extra cash by selling your old baseball cards or last season's dresses? These 20 tips and tricks will make the process much easier — and ensure that you make as much cash as possible.