1.   Oxford may still not know how much it costs to deliver care, making it difficult to decide how much to charge its subscribers.

2.   Oxford, its chorus of critics says, seems to have a poor grasp of how much it costs to deliver the care it is promising.

3.   Predatory pricing is defined as lowering prices below what it costs to deliver the service.

4.   The problem is, no one is certain what natural gas will ultimately cost to deliver.