Yep! This has worked really well for me! If I list things as free, I tend to get people with tons of questions and excuses, and lots of flakes or scammers. If I post things with a pretty low price, people are usually much more pleasant to deal with.

Off Topic: But its the same reason why there are adoption fees on pets. Otherwise there are weirdos trying to hurt kittens.

Even better to donate to a toy library, to make sure it isn't going to someone who is just going to flip it.