All products have a Product Variant record to hold their price, sku, inventory, etc.  A product with no options still has one variant.  So when you create options on a product that variant simply turns into one of the variants.  So there is no "base product" or "base variant" when options are used.

Does that help / make sense?

Thanks,
Jason

Jakob is talking about the master variant (which is a product without variants). This is used as the model to construct new variants to populate information.

We don't have a UI to edit those at the moment - never thought of it - but you're right it would be a good addition. What do you think about adding it to the existing bulk actions dialog ...

Through code it is pretty straight forward:

 var productService = MerchelloContext.Current.Services.ProductService;

 var product = productService.GetByKey(key);  

 product.Price = 10M;  // this updates the price on the main product

 productService.Save(product);

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