LifeinAsia - 12:59 am on Jun 8, 2013 (gmt 0)
What you're talking about is called arbitrage. It used to be a great game, but Google doesn't like it.
You will most likely find that the next 1000 visitors convert much worse than your current visitors (e.g., much lower eCPM). You may also find that you'll have to end up paying more than the minimum bid to actually get clicks. You may also find that Google decides to permanently ban you from AdSense for doing this.