If there are any Ring video doorbell users out there, just thought I'd let you know Ring are currently offering free Chime Pros which acts as a chime and WiFi extender and includes free shipping (https://ring.com/chime-pro). Use voucher code CHIMEPRO-OHMU4IG2BE on checkout (you must be logged in and have a Ring doorbell for discount to work).
This post would probably be better suited under deals and bargains, but I haven't posted enough to have the privilege :-( so I've posted in the category where the only other Ring post I could find is.
I don't know any of the details (of when this expires etc) or the conditions, I was just offered one when I spoke to their customer support.
After doing a Google search I see some users were offered a voucher code via email, don't know if it works as mine was processed by Ring customer support. But some people replying to this post have had success.
If that doesn't work, then I'd suggest getting in touch with Ring customer support. You need to own a Ring product to get this deal and AFAIK it only works for Ring products.
[Mod update (MF): added the promotion coupon code]