I agree with all of the answers - I would NOT pay anything for these as they are now somewhat outdated and most, if not all, patterns are easily accessible online or through much more reasonable avenues.
Too many are trying to 'make a killing' on CL, like one I came across recently. They were trying to sell a 'pristine antique Singer featherweight' for $899. The photo showed a dirty, badly rusted, long forgotten sad little machine. It truly broke my heart!