Once you've determined whether your found treasure is actually worth any money, you need to decide how much cash you want to sink into it. Yes, you might love the challenge of furniture restoration, but if the piece isn't valuable, you'll need to figure out how important it is to you. Is it something that can be repaired relatively inexpensively? Will the project cost you less than buying a new piece? Is it worth your time?
Some projects may just need a few simple fixes you can quickly complete. Others may be more involved and could wind up costing you way more than you intended to spend, which could be the reason the furniture was sitting on the curb to begin with.