Xbox 360 vs PS3 ebay

Given how much Xbox has been selling for on ebay, does anyone think it will be the same way for PS3 after the first couple of days it hits the market? 360's are still making a couple hundred profit on each on ebay, so I was wondering if it will be the same type of market for the PS3, just preorder a bunch and also wait in line at 12am, and its some easy $. Thanks for any insight.