I'd only imagine that you can only get those now via secondhand. There's only a limited amount of units that were made, so if a search on a site like eBay won't cut it, then it may just be too overly difficult now. The 2016 model should still be relatively the same though, and it also has a nicer pen. You could also search for a Huion H420 and see if you find something that suits you.