Pricing and availability at each network hasn't been revealed as we write this, although it's safe to say it won't be on shelves earlier than October 24th. Really, the news here is the Pixel 4's sheer ubiquity. While the Pixel line has been available through multiple carriers in other countries, the Verizon exclusive limited Americans' exposure to the handsets -- an everyday shopper isn't about to visit Google's website to buy a phone sight unseen. This ensures that many more people will see the Pixel 4 and potentially choose it over one of its many competitors.
Update 10/15 1:25PM ET: Launch details are trickling out from major carriers. AT&T will sell the Pixel 4 and 4XL starting at $28 and $32 per month respectively on a 30-month installment plan. Google's original Android carrier, T-Mobile, will offer both phones for $33 per month on a two-year plan (plus $100 up-front for the XL). Verizon is asking $33 per month for the base Pixel 4 and $37 for the 4 XL, but neither requires a down payment. And yes, all these carriers are taking pre-orders with a release on October 24th.