Should I offer BPO to the seller's broker before it's listed?

[Account Closed]

I received a tip that a property is about to hit MLS from a broker that I've only exchanged a few emails with.

Would it be a good idea to offer the full BPO right away, before it goes on market? Or would that encourage them to raise the list price? The market I live in (NYC) is hot right now, with a couple signs of cooling over the past two months.

The broker has been very helpful and I'm hoping to create a mutually beneficial relationship that will last. Ideally, if I offer BPO and it's accepted, I'd hope that she would continue to repeat the process and send me other homes before they go on MLS.