People still use radios?

Bought: $2.25 Sold: $19.82 Fees: $2.77 Profit: $14.80

I found this Transistor Radio at VV among the random cords and plugs. I saw that it said transistor on it, so I knew what it was, and for that price figured I couldn't go wrong. I got home, put a battery into it, and it worked. I listed it for $15USD and it sold within 5 minutes! I couldn't believe it. Not only do people still use radios, apparently I listed it for really cheap? Not sure what the actual value for this is, but clearly more than $15 if it sold that fast. I am going to be on the lookout for these again in the future.