WhatsApp: $55/user
Instagram: $20/user
So he is suggesting a valuation of $800,000,000 ($800M). Which in my opionion is about right.
That puts the value per user right at $47 per user. Again, which given PayPal's previous acquisitions, looks accurate.
Broadcast.com: $10,000/user
WhatsApp: $55/user
Instagram: $20/user