Does anyone have any Japanese products for babies to recommend that is cheaper in japan?

I really feel you on this, babymoon sounds so exciting and it makes total sense to stock up while you're there! From what I know, Pigeon products like nursing pads, nipple cream, and baby bottles tend to be quite a bit cheaper in Japan than what we pay here in Singapore. Merries and Moony diapers are also very popular picks for parents to grab there since the pricing is much more value for money lah. I would also suggest checking out the baby skincare range at drugstores like Matsumoto Kiyoshi, as friends who have been there say you can find some really good deals on lotions and gentle washes.