Vertical Diamond by Ilya Bolotowsky: $34,375

In 2012, artist Beth Feedback was bored and decided to wander through her local Goodwill. She found a few oil canvases and bought them for a combined $9.99. When her friend saw the paintings she suggested that Feedback conduct some research on the artist, Ilya Bolotowsky. She soon discovered that the paintings were created by a famous artist. Sotheby’s put the value of each painting at $15,000 to $20,000 range. The pair sold for a very impressive $34,375. Beth, an artist by trade, didn’t realize what she had, which explains why so many people give away their valuables without realizing what they’re worth.