I have a different perspective from Tactile on this matter. In my view, the HHKB layout offers superior ergonomics and a more logically efficient design compared to the default layout. However, the challenge lies in people's resistance to change, often leading them to instantly dislike the layout due to their ingrained muscle memory. If you're heavily into gaming, I wouldn't necessarily recommend the HHKB as it's more tailored for productivity rather than gaming.
The HHKB provides a tactile feel reminiscent of a regular rubber dome, but it offers a premium sensation. Its tactility is rounded, resulting in a softer bottom out compared to the firmer bottom outs experienced with MX switches and the tactile feedback.
It's important to note that HHKB and Realforce utilize different plates, contributing to distinct experiences with Topre switches. The HHKB, owing to its integrated plastic plate, tends to offer a softer bottom out, while the Realforce, with its stainless steel plate, delivers a firmer experience, albeit still softer than an MX switch.
The justification of Topre's price depends entirely on personal preference. The most effective way to gauge its worth is through firsthand experience. Topre keyboards may not cater to everyone's needs or tastes, making it essential to try them out before determining their value to you.