If you're looking to save money, then you might want to consider switching out store-bought dryer sheets for balls of aluminum foil. Odds are you already have some foil lying around the house somewhere. All you need to do is crumble some foil into small balls and throw a couple in the dryer with your next load of clothes. The foil will collect the static that usually forms when those clothes are rolling around with each other in the dryer.
However, don't expect the foil to give your clothes a nice spring scent like most dryer sheets will. Still, it's a cheap and proven way to get rid of static and leave your clothes softer coming out of the dryer.