Used in reference to any product or service which is reasonably priced - and therefore a bargain.
"Man's got some teefed playstation threes y'nah. I'll sell one to ya bargs blud!"
"Nah fuck Nando's min. I'm goin Sam's Chicken! Pure bargs tings ya get me!"
Friend 2: Sure thing! (takes jar and struggles)
Friend 2: BARG!!! I can't open this crap!
Friend 3: Here, let me. (pops lid off with ease)
Friend 2: .... BARG!!!