SDRplay have recently released a blog post warning potential customers to be wary of the proliferation of fake and imitation SDRplay devices on various online marketplaces. SDRplay warn that these clones may not function with the latest SDRplay software such as SDRUno, and that no technical support for the clones is provided.
Over on his blog K4FMH has also uploaded a blog post titled "Ah Geez. Play Fair with SDRPlay. And If Some Don’t, Here’s What Can Be Done….". His post also discusses the clones and includes notes on how SDRplay fans can help take down clone listings on eBay by reporting them.
Of note is that ICQ Podcast Episode 344 released on Feb 14 also discusses this issue starting at 30:50 in the episode. They note that ethically these clones are problematic as they are ripping off a small company who have sunk a lot of costs into R&D and software development.