Amazon has the Ridgid 31385 6-Inch Heavy-Duty Compound Leverage Wrench right now for $511.98 with free shipping.
Okay, maybe this is a tad odd for a Dealmonger post, since the odds are that you don’t need a wrench this big, and if you do, you probably already have one, but this wrench is just too beautiful to pass up talking about. It will open up to accept 6″ pipe and uses a compound linkage to multiply the force, though we’re not entirely sure how that works. Come to mention it, it seems to have a third jaw and a bit of chain in addition to the standard pipe wrench jaws. Possibly it has a chain clamp on the backside that acts as a fulcrum for the lever to act on. Come on guys, you’re trying to sell a $500 wrench; give us some details!