Kind of bummed. The G5 without lens was $498 yesterday, back up to $598 today. It was a 100.00 rebate. No-one else had this. Mistake? I went back to purchase today and it had changed. How do I know when prices will expire, especially if they are going UP, and is there any way to get a price-point update via email - some kind of alert that will tell me when something has hit a certain threshold? woof!