I was talking about having separate sites on separate servers Jon - not mirroring sites.
If you think your reseller account was expensive you should see the quote we have just had from Rackspace for a managed server
It was at least 3 times more expensive than the next cheapest but the kind of redundancy they were offering was pretty amazing and if they really can't get you straight back up and running they compensate you for each hour of downtime.
We haven't gone with them though - just too expensive.
homo sum: humani nil a me alienum puto ... ( just Google it )