Housely
CDs ($3,226)
Remember when the music world started going digital, and we all started throwing out CDs? Thing is, if you managed to hang on to your CD collection, you might want to take a real close look at it. Rare or limited-edition discs could fetch some cash!
You never know what might have become even more popular over the years, and whether or not that obscure single you bought back in the day might be worth losing your hearing after listening to it so many times.