What is a variable or grouped product
Grouped products
Are better for listing several items in a bundle and is best if you sell kits.
Grouped Products lets you add similar (think materials, design, etc.)
Variable Products
Variable products let customers choose colours, sizes, and more and are for those looking to sell several variations of a single item
let you offer a set of variations on a product, with control over prices, stock, image and more for each variation. They can be used for a product like a shirt, where you can offer large, medium and small and in different colours.