KoxingaTo be fair the HHKB is a different layout, and the AA battery holder on the BT one looks like a afterthought vs this one with a internal rechargeable battery.
If this was closer to $200 without the RGB I'd be seriously considering it because I love the layout, basically a BT KBD67. But since the HKKB BT is $340 (complete keyboard but no RGB, and the KBD67 is ~$200 for a kit like this one but no RGB or BT -I can honestly see how the price would seem appropriate. I just wish it was also offered in a cheaper no RGB option.