please tell me youre kidding?
You just asked another person to give you specific directions on how to make money the same way that s/he does. If more people are selling rare/valuable guides on amazon or the 'bay , the price will probably go down.
Maybe doing your own homework would be a good idea.
i understand increased knowledge on the subject could have a relatively large impact on getting these items (ie someone beating you out at getting them at a sale/flea market or whatever) but lists of every single game value for nearly every video game console has been published by vgpc and unless i'm missing something, game values haven't decreased because of them.
after reading through most of this thread, i thought it was mostly to brag about your scores but also share your experiences. i've learned a lot from random insights here such as just a few pages back in buying brand name clothes and then flipping them for an instant profit at a clothes shop and it's things like that which have made this thread interesting and a valuable enough reference to read through.