One niche exception: cast-iron cookware can almost always be stripped and
reseasoned; many older pieces are nicer than what you could buy new.Re: kitchen appliances, price is also a factor. Pick up a stand mixer for
$10, it could work for 4 months and die and still be cheaper/month than shelling
out $200 for a new one.The rest of these are spot on, though. Used
mattresses, baby bottles, ewww.
What's left? Maybe we should all just skip yard sales. Used lamp? Forget
it maybe the cord has a short. Lawn mower. Not worth it--probably won't
start when you get it home.
If your not going to do something with it, Why add to the clutter.
I can't imagine that I would ever have considered buying any of those
things from a yard sale. Some of those are in the same class as half-eaten
burrito, ABC gum, used toilet paper...:)