Cost of 20 croissants at generic bakery (i.e. Cob's): $50.00 before tax.
Cost of 20 croissants made at home: $5.00 all in.
OK, I know it took a long time to make 'em - I imagine, though, it gets easy after you get used to the recipe. Let me point out that the home made ones are 1/10 the price. And you get to tell everyone you made them.