Do you have a sewing collection of patterns, catalogs, books, buttons, machines, fabric or anything else? Did you find something and don't know what it's worth?
Now in no way does this mean that this is what your item will sell for. You could get more or less.
With sewing patterns there are so many things to factor in such as size, cut, factory folded, envelope condition, incomplete, and your pattern and the buyer just very well may have been at the right place and time:)