In general, they work well. Sometimes the program crashes in the warehouse, then you can hang for an hour. Well, it is necessary to call the manager before departure, so as not to wait later on the discharge until they agree - they will re-coordinate, they will give it to the assembly.
A fast-growing online store, a large assortment, good prices, it is convenient that you can expect a queue even in your car (if you select such a function at the counter).