Goal 1: RAF 4 new accounts for 4 zhevra mounts
Goal 2: Power Level to 60, then Gift 7 level for my 53 shaman, in my 70 Prot Pally account.
Goal 3: Keep 1 account as my 5th account.

But how much will it cost?

4x new accounts: $120
4x 60-day pre-paid cards: $120
4x 30-day free on Veteran account: -$60 savings

Net Total: $180. So that's about $45 for each mount.

Hmmm...