Outer Limits 4x4 Board

My GQ fan hub has finally crapped itself. I refilled it 5 years ago which made it 100% again but the latest refill did very little. I put on a seized hub and it runs nice and cool so i'm fairly certain the hub is the problem. (Was a little down on power and noisy when revving hard but i didn't find any increase in fuel usage)

Where do people buy the hubs from? How much can i expect to pay?

Genuine is deer. I think about $350 +
I bought one off ebay, seems ok to me, mine does run a bit warm up hills but im not sure its the hub thats the problem.
Try one off a wrecker from a big petrol nissan engine, you have to change fans though. Apparently they are the bomb.