Kmart are selling plain t-shirts for $4.50. V neck or crew neck. However there is a difference in tags. The ones marked "plain v neck" or "plain crew neck scan at $4.50.
The ones which just say "v neck tee" or "crew neck tee" scan $2.
Basically you are paying $2.50 more to have word "plain" on the tag.
Some people are really into labels and are happy to pay extra.
Not me. "OzBargain for life" says my knuckle tattoo, it's the creed I live "buy".
They should be nationwide because it would have just naturally scanned like that :) I'll double check when I get to work this arvo.