Check on the item's page, it will show you what quantity we have of an item in near real time. Sometimes there are warehouse errors, but generally it is pretty accurate.
Please note on Philmore items, we have only what is shown on the item page and usually will not ever have that item again. We do try to restock a comparable item in place of the Philmore item.
Our website is designed to hide or not show out of stock items, so for items that are a normally stocked item you might not be able to find it in a search if it is out stock. Most of W5SWL brand connectors and such are considered normally stocked items.
We do handle and obtain many items that are close outs, one of a kind and other surplus or excess items. These may or may not be restocked, so if you see something you want you might not want to delay purchasing it.