Trisho,
Maybe consider putting it into other sections of craigslist, i.e. Long Island and Queens. Three years ago, I drove from Nassau County, Long Island to purchase a table and four chairs from a seller in Brooklyn. It took me nearly an hour once I factored in traffic on the Belt Parkway but it was well worth it. I got an awesome and a great table and chairs.
Maybe free classifieds in a local paper, too? That and there are sites similar to craigslist that might be worth a looksie as well. Maybe worth making some flyers and posting them in local places such as supermarkets, drugstores and even on college campuses. You might need to get permission. Hunter and NYU come to mind.
FWIW, I wouldn't concern yourself about whether or not the item will move quickly. It may be prime moving season and a time when people purge their homes of potentially awesome items. However, it's also a time when people, especially college students, need items for apartments and dorm rooms.
The storage unit but it looks in top shape. There's definitely something to be said for that, regardless of price. And, in my opinion, you've give it a very reasonable price.
Robert