Single-card sets aren't a problem (notable exception: postcards need to be issued in multiple-card sets). The only thing I struggled with on this one was lknowing if it was a card issued at 7-11 or if it was just some display piece (the blank back lends itself to being a display piece), but the fact that it was listed over at Beckett allows it to be listed here in this case.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).