I went to buy one about a month ago. I was hesitant because of the price difference. I found out that the distributor (Yamaha Canada) doesn’t offer it here any longer.
It seems unobtainable at all.
I just bought one from the only place I could find one…Thomann UK…https://www.thomann.de/gb/index.html
The price was actually quite competitive but you will pay a bit more with the duty. Shipping only took 3 days! Faster than the US.
The only drawback is they ship with the European power supply, so you need to get the PA-3C. Found one on Amazon.com…https://www.amazon.com/gp/product/B00008BCXU/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1.