Hi pnj2108,
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.
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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).
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These retailers have been online for years and accept credit cards and PayPal payments.
Hope that helps!
Cheers,