For instock items, your purchase will usually reach the warehouse within a week. Shipping duration to you depends on your choice of shipping method.
If there’s a problem with the received product (e.g. seller sent the wrong item), product exchange may incur another week of delay.
For preorders, made-to-order items and during holiday season, the waiting time will vary. I’ll let you know. Cosplay costumes can easily incur a waiting time of 1-2 months, while for Lolita clothing, it could be around 3-6 months.