How much?

Answer is, it's depending on your requirement. Generally, I charge $400(minimum) for a corporate/PR event coverage last up-to 2hrs.

$400 minimum up to 2hrs
$750 per event up to 4hrs
$1500 per full day event shoot up to 8hrs

You will get all the well focused, well lit and well-composed photographs as a digital download.

A non-refundable 50% retainer for the photography assignment is due at confirming your event date and price. And the balance paid the day of the event.