Currently sitting in my Cobra motor Pool right next to my stingers and my stuns are the following with drivers in fairly prime condition.

http://www.yojoe.com/action/int/hunter.shtml With wolverine
http://www.yojoe.com/action/int/blades.shtml With Fang
http://www.yojoe.com/action/int/redjackal.shtml with Red H.I.S.S
http://www.yojoe.com/action/int/eurostalker.shtml With Vamp

Now whats odd is all these are in black with a yellow/white/red stripe sticker down the side with a cobra sign on, i was undere the impression they were SAS.
Now i'm not intrested in the price to sell them... just for curiosity, i don't see black cobra vamps very often... look really good next to the stingers.

not exactly sure- but red jackal i think is like 20-30? maybe mroe now.
that hunter i have to imagine is worth some serious bucks.
not sure about the rest

Some of these Action Force (now Cobra) vehicles have been upgraded. The decals would have been supplied either from the Action Force Comic or some of the Action Force vehicle packs decal sheets (they gave extra decals).

The comic gave a free decal sheet when the change from Star Wars articulation to O-ring happened with the figures. The comic had Cobra decals one week and Action Force decals the next, so you could stick your new decals on the likes of your Q-Force Sealion, Red Shadow Roboskull, Hyena (aka Red HISS), SAS Panther (aka VAMP) etc...

Basically, the extra decals were included so you could update your older vehicles into the new wave of Cobra vehicles.
And as for the Red, White and Yellow stripes these were Cobras answer to the Red, White and Blue of Action Force (GI Joe stripes).

Hope that helps...

Decky Hedrock.