I bought one on Amazon by a company called Yeego, but they all look basically the same. I got the 30" version and it actually came as 2 separate 15" units. It has worked well. Had an issue with the coil on one freezing and the support guy in China was very helpful and responsive. Still working great after a few years and really quiet.
I would make sure you know what you're putting in it so you know if you want a compressor system or a thermoelectric system. The latter is usually used for wine but doesn't get as cold.