For the book 'Brain Rules (Updated and Expanded)', identify the cheapest digital format available (eBook or audiobook) and its price. Then, for 'Brain Rules for Baby', confirm if an audiobook is available and, if so, state its length.
Navigate to brainrules.net. Locate the 'eBook' link for 'Brain Rules (Updated and Expanded)' and click it to find its price. Go back to brainrules.net. Locate the 'Audio' link for 'Brain Rules (Updated and Expanded)' and click it to find its price. Compare the prices of the eBook and audiobook for 'Brain Rules (Updated and Expanded)' to determine the cheapest digital format and its price. Go back to brainrules.net. Locate the 'Audio' link for 'Brain Rules for Baby' and click it. Determine if an audiobook is available for 'Brain Rules for Baby' and, if so, identify its length.
State the cheapest digital format (eBook or audiobook) for 'Brain Rules (Updated and Expanded)'. State the price of the cheapest digital format for 'Brain Rules (Updated and Expanded)'. Confirm if an audiobook version of 'Brain Rules for Baby' is available. If available, state the length of the 'Brain Rules for Baby' audiobook.