This deal is very much similar to that which was given to the 500 Million Limited Edition controllers, but for an additional six products.
So any V1 or V2 controller should be able to be traded in towards any of the applicable products, and is not mentioned online.
An end-date for this deal has not been specified for the deal, but I should be able to amend it if it's ever made known. As the shipping dates are a good couple months out, you'd be without a controller for this period.
And you can always put a deposit down before trading to secure the controller, but the trade-in credit will only apply when you trade your controller in, and if you do it within their deal window.
The deal is available on any of the following products: (Pre-order dates in italics)
Sunset Orange Low Stock 18 Sep 2018
Blue Camo 12 Oct 2018
Steel Black 30 Oct 2018
Silver 30 Oct 2018
Metallic Copper 30 Oct 2018
Gold Out of Stock