Today I was roaming the MR forums. (Slow day at work and I was in just about every forum before I went home) and I ran across a mention of a site that will calculate the value of any older Apple computer by selecting from a pull down menu the type of processor, amount of memory, HD size, what drive (superdrive, CD, DVD), and a few other details about your mac. It then gives you how much your computer is currently worth based on your setup. I have searched all night to find that reference and can't. Can anyone help me out?