For landing pages i will use Wordpress with Elementor as a builder along with manually written code using HTML/CSS/Javascript to create a fully functional and a responsive project.
Delivery - 1 to 2 weeks depending on the structure and features.
For ecommerce platforms i will use Wordpress with Elementor as a builder alongside wih Woocommerce to build a fully functional and responsive store.
Delivery - 2 weeks to 1 month.