Why do you make the products to order and don’t have them in stock?

The reason is pretty simple, I have more than 100 items on sale and the most of them are available in more colours and sizes. It would be impossible for me (one and only artisan) to make every piece in every variable possible, so making every product to order is just simpler and managable.
It also allows me to make custom changes on a product for anyone who requires them.