I just saw this ad on my local craigslist: "Here's an almost brand new Canon 50mm F1.8 This lens was purchased, barely used, and then was run through the washing machine. The auto-focus still works, none of the internal electronics seem to be damaged. The only issue is the glass has all sorts of lint and what not on it. " He is asking $20. Do you think it is worth that and take the risk? I know you can usually find these used in good shape for around $100. How hard would it be to use a lens cleaning kit to remove the lint (if possible).