Question about coin exchange for Lorderon mounts

I'm still a little confused about the coin exchange so I wanted to ask for clarification before I invested my time in doing this...

Would it be possible to level a character to 80 on Icecrown and trade it for coins on the exchange, and then use the coins to buy the 310% netherdrake for a character on Lorderon? Just to be sure, I would have to donate first to make this possible?

Yes, that's possible. And yes, you would need to donate to be able to use the Trade section for selling characters.

Awesome, thanks!