Same Product - Different Sizes and Applicators, Attribute or Separate Page?

(EXAMPLE) Say I'm selling soda. And this soda comes in a 100 oz. Super gold bottle, a 20 oz. glass bottle, and a 2 oz. cup. Same product, but obviously vastly different prices and containers.

I want to market the 100 oz. to one demographic, and the 2 oz. to another.

Would you create 3 different product pages, or one page with separate size/container attributes? And if you create 3 different pages, is it going to be a problem SEO wise as the content will be almost duplicate (the description of the soda will always be exactly the same)?

Hope this makes sense :)

Either is technically possibly, but there's not enough detail in your example to express an opinion on which would be most sensible. In particular, the extent to which your marketing will differ for different demographics is unclear, as are the resulting customer journeys. It is these that would really determine whether this could be treated as a single product with attributes, or multiple products targeted differently.

And I'm puzzled. If you're marketing to different demographics, why would the descriptions be exactly the same. Surely your product descriptions should reflect the demographic toward whom you are marketing, even if the underlying product is the same.