For your consideration, here is a Genuine HP 940XL Black Twin Pack Ink Cartridges, no. 366641, warranty ended Aug, 2016.  They are sealed, but the outer plastic packaging is missing.
 
Please note:  Just the two ink cartridges, in the bags will be mailed.  I am not including the outer packaging, to cut down on the weight.  They will be mailed in a box for protection.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (360.864n-.16hc)
[Thanks for looking!]