TorCloud estimated prices should be updated
I ran a calculation that was previously available in in ticket #5358 (closed), the new EC2 prices should be around ~$19.00/mo (see: [1]) with no-contract (aka On-Demand instances). Or much lower at $6.66/mo (see: [2]) with 1-3 year contract (aka Reserved instances), though that isn't as easy as point & click.
Trac:
Username: breadtk