I started to make my own about 10 years ago and honestly I think it is some of the most wonderful stuff in the world. It is cheap to make and it lasts a long time. Here is my recipe:

1 cup of vinegar
1 cup of household ammonia
1 Tablespoon of dishwashing liquid
1 pint of rubbing alcohol

Put this in a gallon container and fill with water and shake. Then fill spray bottles as needed. It cleans windows without streaks and everything else in the house. The addition of the rubbing alcohol helps it to dry faster to a streak free shine.

I have saved a bundle on buying all those all purpose cleaners and it isn't super highly scented and once it dries you just have a clean area without all those strong toxic fumes.

I buy my ammonia at the dollar store 1/2 gallon at $1 and the rubbing alcohol I was buying 2 for $1 but the price just went up to $1 each.

I keep gallons of vinegar around the house for other cleaning.

This is super cheap to make and it works as good as 409 and Fantastik without the sticker shock or fumes.