I just received a Cherry MX Brown board today, and it's sitting side by side with a Topre RF87u that I've owned the past year:

... And I don't know what to say, because Topre switches are of significantly higher quality than Cherry MX switches. The switches are significantly smoother, more solid, and have less wobble than Cherry MX switches. The difference in feel is hard to describe, but there really is indeed a big difference in quality (vs. Cherry MX switches).
Also, my Cherry MX board flexes, while it's very difficult to flex my Realforce board. Granted, my Cherry MX board isn't a Filco, and is a Korean brand, which seems to have just re-branded Keycool keyboards, but I have owned a Filco for a brief period of time as well, and it wasn't quite as solid as my Realforce, either.
As someone mentioned earlier, the moment I opened up my Realforce box, my first impression was that it was meant to be used as a professional tool - and I'm not saying this in an exaggerated fan-boi manner; I mean it literally. They are just built really, really solidly, and I can absolutely see them being used in a recording studio, a bank, or what-have-you.
If typical $5 rubber domes are "consumer" products, Cherry MX boards I would say are "prosumer" products (a term we often hear with digital cameras), and Topre Realforces would indeed seem (keyword "seem"; I'm not making a definitive claim) to be professional products.
So, yes, with their higher build quality, higher switch quality, and higher key-cap quality, I can see why Realforce boards cost $260, and I would absolutely have no problem paying that price again for another one.
Now, THAT BEING SAID (this is important!), this doesn't mean that I think everybody will LIKE Realforce boards. What people like is absolutely a matter of subjective opinion, and that is different from answering the question of whether Realforce boards are "worth it" or not.
All I'm saying is, given the higher quality of Realforce boards, switches, and key-caps, I can understand why they are priced the way they are.
It's like, a rich billionaire may prefer driving their BMW everyday, rather than their Ferrari, as a matter of convenience, preference, etc. But I'm pretty sure he would still see the Ferrari's costs as being "justified", given all the specifications of a Ferrari. My point with this isn't to compare the Realforce to a Ferrari, but I'm just trying to illustrate how someone preferring something may be different than what someone deems "justified" in terms of cost.
Just my two cents.