Seller Blocking Me From Making Offers - Is He Being Unreasonable?

I've only been blocked by one seller. It was a coin listed at 35% over The NGC Krause world value and the listing described it as unique. I messaged asking to confirm the KM and what was "unique" about this one. His response was he didn't have time to look it up. I was going to make an offer based on everything (it was slabbed), but I'd already been blocked before I could even make an initial offer simply for asking those questions. Oh well. Life moves on.

In another instance, I messaged a seller about one of their coins. It would be a $90 catalog as problem free, but the coin had two planchet flaws (two broken edges). The seller listed it at $75. The value of the next grade down was $50. With the two flaws, I feel $50 is max valuation for its best day. In correspondence, the seller said they'd come down 20%, but that is $60. It's up to me if I want to pay a premium for this specific coin. It's still listed. But everyone was nice, and doors are still open for down the road.

But this past weekend I made an offer on an antique citrus crate from my family's home town. In the offer, I noted the reason for my interest and my reason for an offer that was 1/3 of his list price (what I've bought other similar crates for on ebay). I was s little surprised, but he accepted the offer :)

I think the nature of the beast is a few dealers don't actually want to be bothered, a few are playing capitalistic games more than anything, but the vast majority list a number as a starting point to good faith negotiations with someone and are accommodating from there to the back and forth as long as things are civil. I'm grateful the majority are this third type, and I'll not take offense with the minority others.