I'm happy to be an affiliate for music instruments too!
These sound amazing. The melody is meditative and tranquil. There are 8 circular tongues, and one on top.
RAV Vast Hand Drums
They're made in Russia, and all look very similar. There are a variety of tunings available. After placing an order, waiting time is 8-12 weeks. Price is $650-850, $40 for a carrying case, $70-80 shipping, and a customs fee.