eBay lingo explained



"Extremely rare"

Example:  I would list one of my toenail clippings as extremely rare, because only my clippings contain my DNA.

See here also.



"Includes a certificate of authenticity"

Useful for proving the authenticity of an item that you are selling.
For example, I provide a Certificate of Authenticity with every "Genuine Loch Ness Monster's Tooth" that I sell.



"Pulled from a working system"

working  =  I turned the system on, and I either heard the power supply fan turning, or I saw a light somewhere turn on.  No smoke was evident.



"It was working the last time I powered it on"

Meaning #1:	It does not work now.  I will say that it it worked the last time I powered it on.  When the buyer complains, I will say that it was working 5 years ago, and must have deteriorated in that time.
Meaning #2:	I have no idea how to tell if it is working or not.  But, I think there's a good chance that it is working.  I do not want to list it as untested because that will put a lot of people off.  I will list it as, "It was working the last time I powered it on", and take my chances.

"Untested"

Meaning #1:	Untested.
Meaning #2:	Tested by seller, but found to be faulty.  Listed as 'untested' to give hope to the buyer that the item is working.  When buyer discovers the item to be faulty, they have no recourse because the item was listed as untested.