First of all, I would like to say Congratulations for your bundle of joy!
Have a look at this liquidator: You can fill out this form to submit an enquiry for baby formula stock and pricing.Link hidden: Login to view
They sell in bulk and even in singles.
Sadly, I was unable to find any other wholesale suppliers for baby formula but have a look at the following retailers. They have this product at a lower price compared to other stores (based on reviews).Link hidden: Login to viewLink hidden: Login to view
These retailers have been online for years and accept credit cards and PayPal payments.
Hope that helps!