Some sites indicate the final cost of the goods already taking into account all expenses (while logistics costs are indicated on a separate line). This is the best option, because this way customers have no questions. On the other hand, if you work with many delivery services, then it is not always possible to calculate the exact cost. So you need to look at the situation and choose the option that will not mislead customers.
Don't ask users to do more than is necessary morocco telegram database to place an order. For example, some stores (see example below) don't allow you to immediately add a product to your cart — you first need to go to the product description and then click the "Buy" button.
Usability analysis of the shopping cart on the website
The only thing is that when you have to choose the size, weight, packaging and other parameters, buying right away is impossible, so this approach will be justified.
But even in this case, there are already technical solutions. Pay attention to marketplaces. For example, on the Wildberries catalog page, when you click the "Add to cart" button, a window with sizes pops up: