transporting 210 gallons of water!!!!

[Justusfish]

Anyone know of a place I can rent clean 10 gallon buckets or have a novel idea of how to transport 210 gallons of water from one location to the next? I'm buying this guys established tank, with mature, beautiful fish, and want to bring the water with me as I think it would put less stress on the fish.

Please help!! It seems like an arduous undertaking and any advice would be greatly appreciated.