Kobo is running a Buy One Get One sale on boxed sets from Monday June 3 to Sunday June 30. This sale will also be supported at Walmart, on their website in the US, since Kobo provides digital content to Walmart. This sale is supported in five territories—US, Canada, UK, Australia and New Zealand—and there are separate landing pages for each territory.
You will find my bundles Dragonfire Quest, The Dragons of Incendium: The First Collection and The Prometheus Project on the PNR & SciFi carousel on the landing page. You’ll also find The Coxwells Boxed Set on the Chemistry & Comedy carousel. (The order of the books on each carousel will change throughout the month, so you might have to click View All to find the titles.)
The links on the titles above are Kobo links. Here are the Kobo landing pages by territory.