We have a business requirement wherein, a collections of products will use "shipping method A" and a "payment method A". While a certain other collection of products will follow "shipping method B" and "payment method B".
In order to prevent buyer from adding products from both the collection to a cart together, we are evaluating creating a new website (or a store). This would be to ensure that products from both the stores do not show together.
Other than shipping and payment, the list of extensions for the second shop are also very different from the first shop.
What would be the best option for achieving this functionality ? Should we set up a new website or just a new store for this ?