Folks, I am new to MBPs. I want to buy the new 15" that supports 8GB. I need 8GB (please don't ask why). As you know, Apple wants an extra $1K to add 4GB to the standard 4GB configuration. Are there less costly options? Can the RAM be bought and installed from someone else? I realize these new laptops were just released so there may not be a lot of info on this? My guess is that the standard config would come with 2x2GB so none of it could be reused as I'd have to buy 2x4GB so it may be just as expensive not sure.