You'll want links and proof, of course:
and from here:
Terrific value, though it's not clear exactly what new users will see in Lumia Offers once they boot up their new phone. If indeed either or both of the year of Office 365 and the Desk Desk are offered, then the value for money factor increases even more dramatically.
Here's the link for the Lumia 650 too:
In short, if you've been on the fence about upgrading to the 950 or 950 XL then this is the push you've been waiting for. Consider that the Lumia 950 started at £499. It's now half the initial price (UK money). For a smartphone with an unparalleled camera and very decent other specifications, including one of the best screens in the world.