Some have posted links to procedure to get a fully functional Google Play store on their kindle devices to allow for purchasing the "Standard" and "Premium" upgrades. I tried these procedures on my two kindle devices and wasn't able to get it to work. I think the Kindle may work with the DCS App fully if it is "rooted" but I'm not willing to do that with mine knowing that any slight wrong move while doing this may turn my Kindle into the new and unimpressive "Kindle Paper Weight".
Some have gotten to work, good for them. I couldn't and it may be a bigger headache than what you want to deal with.