The larger brands send us an automated inventory update every day, and the website shows items availability based on that inventory feed. Smaller brands refresh their inventory weekly, or sometimes monthly.
ExpertVoice is not notified in advance when items will be back in-stock or added.
We would recommend that you use the out of stock notification tool on the product page, to be alerted if and when the inventory is replenished for an item.
Please note, item availability is on a first come, first serve basis, and requesting to be notified does not guarantee an item will be held for you.