Two Vic-20 Xonox Double Enders

[PaddyTheChump]

Hey everyone,
I have no clue about Vic-20 stuff, so I'll ask here.
I have Artillery Duel / Chuck Norris Superkicks and Ghost Manor / Spike's Peak.
One of them has a rarity of 6, and the other of 4.
http://img.photobucket.com/albums/v400/paddyvaughan/IMG_0695.jpg
http://img.photobucket.com/albums/v400/paddyvaughan/IMG_0706.jpg
I also have the endcap, but that's probably not worth much at all.
Anyone have any ideas?
Thanks

[pseudonym]

$15 each maybe. The single-enders are worth more. I haven't been keeping up on Vic-20 lately.