Snapchat might have turned down more than $3 billion from Facebook to be acquired, but it looks like it spent a hefty $15 million to quietly acquire a startup building a Google Glass-inspired product.

The recent Sony email leaks contain deal terms stating that ephemeral messaging app Snapchat paid $15 million for Vergence Labs, according to a Business Insider report. More specifically, it paid $11 million in cash, and $4 million in stock.