I’m launching a new WooCommerce shop and want the variant creation process to be painless from day one. My products come in different Color and Diameter options, plus a choice of with insect screen or without insect screen, and I’d like customers to mix and match these choices effortlessly on a single product page. Here’s what I’m looking for: • Configure variable products that combine Color, Diameter, and the with-/without-insect-screen option so every possible combination is purchasable and stock-aware. • Recommend, install, and set up an easy-to-use plugin or external tool that lets me generate these variants in bulk instead of adding them one by one. • Make sure the base price displays per liter (e.g., “€3.80 / L”) both on the product page and in catalog views, following EU price-indication rules. • Supply a brief step-by-step guide (video or PDF) so I can replicate the workflow for future products. The finished setup should work smoothly with the latest WooCommerce version and common themes, with correct price calculations and clean variant selectors.