Yes, it could be profitable, especially if you live in a populated area. Having access to loads of local potential buyers is key for many types of businesses, but it makes even more sense with large items that could cost a lot to ship. However, people might be willing to pay shipping costs if you deal with unique or vintage furniture.

It's essential to clean your used furniture and try to make it look as nice as possible. It's also important to take good photos of your items for listings. This could reduce the chance that a buyer might back out of a deal if they don't think an item looks like it's in good condition.

Depending on the type of furniture, you might want to vacuum or steam clean it, as well as spot clean if there are any noticeable stains.

Many online marketplaces provide different shipping options. For example, Chairish provides parcel delivery options through carriers such as UPS, FedEx, and DHL. eBay also works with different carriers, including USPS, FedEx, UPS, DHL, OnTrac, and more. Note that Facebook Marketplace doesn't allow you to ship furniture, and OfferUp allows shipping only if the item weighs under 20 pounds and costs less than $2,000.