What do you think he is selling? Your getting a h beam rod and bms crank. Not a billet crower crank and rods.700 for crank? 700 for rods? In a stage or TA block? I wouldn't bother.
Truth be told those Chinese rods and cranks handle a lot of power. I personally know of eagle rods and cranks making between 1000 to 1500 hp on various motors. I would say a majority of the times those parts don’t break cause of too much hp they get broken from other reasons.