Saving orders to save shipping costs

With regard to saving orders in order to save shipping costs, I use the following arrangement;

You place an order (including shipping costs) and pay for it. Then you send me an e-mail that you want to save orders.

The order will then remain in my warehouse. If you see something nice again, you can place a new order and pay and use the discount code grvz. The system does not charge shipping costs for that order.

It doesn't matter how many orders you place. 
Maximum weight per package is 20 kg / dimensions 100x50x50cm. If weight or dimensions are exceeded by the total number of orders, normal shipping costs must be paid for each subsequent package.

As soon as you want me to send the orders, send me an email and I will send the package to you.