If you are listing or looking for a metal clamping tool it is important to differentiate between the terms of vice and vise.  Often used interchangeably they do have different meanings depending on location.

Vice normally indicates either a lower ranking office, such as Vice Chairman or sinful behavior.  However, in Britian a metal clamping tool is spelled vice.

Vise is the normal U.S. spelling for a metal clamping tool.

On blacksmithing vises normally the spelling would be either post vise or leg vise, but some run the words together as postvise or legvise.

In doing eBay keyword searches you may need to use both vice and vise and then narrow it down to categories, such as Collectibles, Home & Garden or Business & Industry.

For blacksmithing, you may need to additionally search on postvise and legvise.

In listing titles some sellers include both spellings.