Fair Pricing Policy

It is probably easier with an example:

I offer 100g of “item A” for 10$ (100$ per kg) on Amazon and my website. The same price on both platforms. I offer 200g of “item A” for 16$ (80$ per kg) on my website, but this option is not available on Amazon.

Does it violate Amazon’s fair pricing policy? I have “processing”, “packaging” and other costs that are the same no matter the weight, hence, I can offer the product much cheaper in bulk.

I apologize if the question is very basic, I couldn’t find an answer to the question. My “add to basket” button disappeared and I don’t know why.