UPDATE: Expo Markers!

Whoopsie!  I did not read the Expo Marker coupon closely enough when I made my post this morning!  And I now realize I may be misreading the coupon.  Does it mean "Save $2 on two packages of Expo Markers" or "Save $2 on a 2 pack of Expo Markers".  The preview picture on Coupons.com says "$2 off Expo Washable Markers any 2 packs of Expo Markers".  So, what's your take on this coupon?  I really think you can read it either way, unless the actual wording on the printed coupon is different and I used mine so I can't take a look now!  Do you think I need to go back and buy 6 more packages of markers to make this right?  I really want to know!  I don't mind admitting I've made a mistake and righting the wrong.