Nope. Offered perhaps 10,000 and getting no engagement and "sorry not interested in selling" bs. I've dealt with google and that's the only person/company that's not interested in selling any domains and doesn't need the money. (Or once a Fortune 500 company). Everybody else (especially this guy) is interested in selling. I know the "not interested technique" well. And I know this guy is a gambler and there is no end in sight to this. We don't have time to waste with someone who won't even state a price and wants to be chased.
I have found my client another domain that they are happy with.
Because when it's said by a company that is in the business of buying and selling domain names and has sold multiple domain names for big dollars it's BS. I operate in that industry, this isn't speculation on my part.
Otoh, if I approached Marissa Mayer to buy a domain she owned I wouldn't consider "I don't want to sell" "BS".
If I approached McDonalds and wanted to buy "hamburger.com" from them (hypothetical) and they said "don't want to sell" I wouldn't consider that BS.
But this company, that is their business (domains). It is BS.
Lastly, If your vanity domain name is (hypothetically once again) "nowblog.com" maybe you aren't interested in selling it. If someone offers you $100,000 you might be interested, correct?
Why not just use a non-optimal domain name and buy the boutique domain when the startup in question is in a stronger bargaining position and/or has more cash? Lots of YC companies have done this and it didn't seem to be a problem. Even Twitter did it.
Bad strategy. Would increase the price tremendously. This is what I do and I operate on both sides of that business. This particular company got a million dollars for a domain in a similar situation.