Sounds fishy to me! How did you come in contact with this person? To have agreed upon a price and date and time to meet and then uh oh, whoops, "I sold that lens, but conveniently, I have another lens which I'm sure would fit you just fine!" If this were me, I'd continue looking; try KEH or one of the more reputable sellers on e bay or APUG's own classified. Good luck and proceed with caution. (remember the old tv show Lost in Space? "Danger, Danger Wil Robinson...."