Can not find the booking button + pricing

Hello, I just joined booking in order to test how it works and how the Booking button is used/priced. I need to add the Booking button in a client's website. However, I can't find the booking button. Does anybody know where I can find it in order to integrate it in my website; I'm thinking that maybe it is not available yet because the prpperty address is not verified yet. If this is the case, could someone tell me what is the price list for the booking button;

Thank you.