There's a new opt-in program in partnership with Amazon, which gives you the opportunity to reach more potential consumers via Amazon Marketplace. The opportunity opened up today and VIVEPORT titles that opt-in will be eligible to appear on Amazon for purchase in the coming weeks. Like any Amazon product, VIVEPORT titles on Amazon will have their own detail pages, reviews, and can be found through search. People looking at Amazon Marketplace items including HTC VR devices can potentially see VIVEPORT titles in the 'Customers who bought this item also bought' section.
Check it out on the VIVEPORT opt-in page for your title(s).