Thankfully, online shopping isn’t just for new furniture these days: There are dozens of places to buy and sell vintage and antique goods.

So, it may be tempting to buy used furniture but be mindful of upholstered items like cushioned dining chairs and desk chairs, couches, sofas, and other items with fabric accents.

IKEA is making its Buy Back & Resell program permanent across its 37 U.S. stores following a pilot last summer. The service applies only to used IKEA furniture that is fully assembled and ...