Chocolate Ice Cream - costing out the recipe

I did the costing for this to the penny. Yield was 48 ounces - just like containers in the grocery store. A 48 ounce container of what you consider "good" ice cream from a grocery store costs any where from $5.00 to $7.00. When you create this at home you are getting only natural ingredients - no chemicals added for a cost of $6.69. Here's my breakdown:

8 egg yolks	$ 1.28
1 cup heavy cream	$ 1.49
3 cups half and half	$ 2.01
Sugar	$   .37
Cocoa	$   .87
Vanilla	$   .67
Total cost for 48 ounces	$ 6.69
Per person cost for 6 oz. servings	$   .83 each

Although that is not necessarily "inexpensive" compared to the grocery store you have to accept the fact that it is by far a much, much better product for your family. My husband is plowing through this ice cream and is already asking when I will make more. What have I gotten myself into?