$0.48 for an entire bottle of glass cleaner - rated the best homemade glass cleaner by Crunchy Betty. Recipe: 1/4 cup rubbing alcohol, 1/4 cup white vinegar, 1 TBSP cornstarch, 2 cups warm water. Combine everything in a clean spray bottle and shake well.
ONLY use this and it leaves floor spotless. (Heavy duty floor cleaner recipe: ¼ cup white vinegar 1 tablespoon liquid dish soap ¼ cup baking soda 2 gallons tap water, very warm.) It leaves everything smelling amazing.