I picked up this item for a dollar or two at an estate sale. At the time, I had no idea what it was. It kinda looked like a speaker, but not a traditional speaker that I'd seen before. But it had a brand and model number so it was SUPER EASY to look up on eBay to see what it's worth!
It's super simple advice for anyone that wants to learn more about flipping things on eBay for a profit: Look for things that have brands and model numbers because they are SO EASY to look up.