Not more than a regfee I am afraid. Not a domainer myself but spend enough time in domain forums to have an idea of how it works and what people look for.
For starters, the plural form makes it grammatically weird, there is no such thing as "webhostings". People that try such domain hacks are often stuck with a domain and drop it come renewal.
Then comes the extension. The extension simply won't stick and many people will forget the domain almost instantly. Speaking of which, try the simple radio test. Can you easily say/explain the domain verbally, to a potential visitors - "Yeah, my website name is webhostin dot gs...no, no, not webhosting.gs...the dot is after the N, so it can form the word webhostings...". And still a lot of people will try webhostings.com lead by their habits.
Monetizing or selling unusual TLDs is hard enough but when you add a "clever" domain hack to it, makes the whole thing a hardcore task