[jabroni_salad]

This book has created a whole class of very annoying people who do nothing but repeat "How can you make this deal better for me at no cost to myself" in an endless loop and have no strategy for what to do when the other party isn't willing to negotiate themselves downwards for free.

[WalterBright]

Both parties can employ that strategy, and there's no sale if they cannot agree. It's self-correcting.

If you find it annoying behavior on the part of the other party, walk away.