Formula Pricing A Future What Made You Choose The Formula Your Baby Drinks?

What made you choose the formula your baby drinks? - formula pricing a future

This is a question of curiosity. If the price do to your baby or baby's reaction, which is recommended by doctors? My son had a lactose-free formula, due to problems with vomiting. He drank Similac. In the future I'll lactose with more children, have formulated it to use. If no rude reply, thank you.