Best option if you've ever considered an ultrasonic. Buy in case it's a glitch. Even if seller is sketchy, you can get your money back.
Looks like this likely turned out to be a scam. If you don't want to wait to see if you receive the ultrasonic, file a dispute with eBay. Seller has 3 days to return the money (ha - ok), then you can escalate with eBay and they will handle. Sorry for the extra pain in the ass.
https://resolutioncenter.ebay.com/ (where to file)
Edit: Despite being told to file a dispute, wait 3 days, then escalate, I just got this notice (note that I did file a dispute online, then called eBay)
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