I know we all live on a budget when it comes to foods. Myself I wont pay the extra money for the self rising flour so I make my own, its VERY easy to do.
This is for 1 cup all your do is double it for the recipe you need it for
Self Rising Flour
1 cup Flour
1 1/2 tsp baking powder
1/2 tsp salt ( for 3 cups I only use 1 tsp)
Mix together and voila you have self rising flour