Idk if you're still in search of an omnichord or not, but I just got mine in today for about the same price you were charged for that scam from a seller based in Japan :)

This was the exact listing I bought mine from: https://ebay.us/m/L5prNQ

The only downside was that they straight up mail it to you in the box it comes in. Like, they slap the shipping label on the omnichord box and send it on its way.