SMS - non-label store copies?

[frogofdeath]

Don't know much about Sega Master System collecting, but found three games today that were originally supposed to be used in store displays. They each have a sticker on them noting that they are "not for resale", but don't have an official game sticker. The games are:

• Gangster Town
• World Grand Prix
• F-16 Fighting Falcon (card)

They were ultra cheap, so I thought I'd pick them up for s-n-gees if nothing else. From what I gather, the standard games are all pretty common, but would these copies be worth anything more?

[vintagegamecrazy]

Definitely not real common but I don't they command more than a couple of bucks more than the regular versions.