Every Bill Hero results link is specific to an individual bill, and the results for that bill are dynamically generated, meaning that the results are re-generated every time you click on the link.
The data from your bill remains the same, but the plans and prices available in the market change daily. Therefore, the savings value found for each bill is an assessment at a specific point in time, and the savings value can change over time as the market plans and prices change.
This can mean that your results may be noticeably different when you re-open your results link as compared to the previous time you opened your results - usually it will only be noticeable if it is one of the top-ranking plans that has changed between your visits to view the results.
This can also affect the headline savings presented in the summary email and SMS messages that Bill Hero sends for every bill analysed.
Bill Hero populates these message templates with the calculated savings at the point in time when the bill was first analysed and compared.
If prices have changed in the market since that time, it's possible that the savings displayed could be different when you click through to see your detailed results.