Over on his blog Akos has uploaded a new post that discusses the topic of avoiding RTL-SDR rip off’s on sites like eBay. On auction sites there are many dishonest sellers who sell or resell items at overly high prices, hoping that someone will make a mistake and purchase from them.
Akos also points out how most of the “full band” direct sampling based RTL-SDR’s are incredibly overpriced. We note that for the same or an even cheaper price you could pick up a regular RTL-SDR dongle plus an upconverter, and enjoy much better performance, or as Akos notes purchase a Soft66RTL3 or RSP. He also points out overpriced dedicated ADS-B sticks, which are now outperformed by even the cheapest of RTL-SDR dongles. Finally he mentions to avoid some sellers who are simply combining RTL-SDR dongles into strange contraptions mounted on a small camera tripod and selling them at high prices.