Things to sell to make about $30?
I want to buy something that costs about $30 and my parents don't give me money.
Look around you bedroom and see what you have of value. For even $30, though, it has to be something pretty good.
Depends on what you own. Do you have maybe somethings that may be worth a price, but don't really need. Sell those objects.
Old collage textbooks...
Ten gallons of gasoline