There may be a number of reasons why your weekly pricing is not what you would have expected it to be.
Check the following, to see if any of these areas are causing anomalies:

• Check your Price Planner (Properties > Edit > select "Price Planner" next to your selected property > Go) and make sure you have the correct prices added.
  If you have per person pricing enabled, check your pricing for each per number of persons to ensure they are correct.

• Check whether you have a discount or special offer set up for your property in SuperControl.