The device best-sellers, as on Black Friday, again included Amazon Echo speakers and Fire TV.
"I am also giving a 110% guarantee on this being an authentic Apple prototype device," the seller says, adding "I cannot guarantee that it will make calls or that the camera will work.
It shifted away from the fickle whims of the retail market, where it sells memory cards to individual consumers, and toward selling memory straight to device makers and sellers.
At the moment supplying Product Category One devices is a sellers' market, however, with demand projected to outstrip supply, more makers of these devices are likely to spring up.
While party food and alcohol sales were buoyant, as were new TVs and tablet devices, traditional summer sellers such as barbecues and gardening items, outdoor furniture and summer clothing all suffered.
BlackBerry, iPhone, and Android devices were best sellers, says IDC, and the same trend is visible in Canada.
Green Throttle is angling to be a mobile app developer, a gaming device manufacturer and seller, and a gaming studio of sorts.
Also of interest is that much of the skill growth occurred near year-end, ahead of the busy holiday season when Alexa devices became top sellers.
"Customers purchased millions of Amazon's Alexa-enabled devices this weekend, and Alexa devices were the top sellers across all of Amazon," said Dave Limp, Senior Vice President, Amazon Devices & Services, in a statement.
