You describe Webmaster On Demand as Pay As You Go but I still need to buy hours up front?

Webmaster On Demand is a Pay As You Go service as you are only billed for the hours you use as you use them. The payment for webmaster support is held in escrow and we create support credits which can be used by whoever provides you with webmaster services. You can get unused hours refunded less a small 10% administration charge. There are a number of reasons why you might no longer require or want to use the Webmaster On Demand service including refunding unused hours that had been allocated to a completed special project.