Really don't know why some get their knickers in a twist about the OP asking $1800 for a Kaiju on the secondary market. Prices on the secondary market are always market driven, sellers typically sell for what they can get; buyers spend what's in their comfort zone for knives.
Kitchen knives on the secondary market is worth whatever a buyer is willing to spend. Most sniffing around KKF BST are savvy enough to know what they're buying.
Sure one can always argue better buys for the money—but why should the OP consider them if he/she is zeroed in on a Kaiju? I can totally see the logic of jumping the queue by offering a premium price to fill a burning void in the knife roll. Similar to how it's perfectly reasonable paying over the odds for a denka from Epic Edge, versus the dice roll, wait, and communication gaps of ordering direct from TF.
Some comments seem to feel that perceived, excessive prices on the secondary market somehow skews the knife market, and has a negative effect. I love seeing lofty secondary market prices for kitchen knives as a good thing—it suggests that the market for higher end kitchen knives is healthy, expanding, allowing knife makers and vendors to charge more and make a decent living. The higher the price of top shelf kitchen knives, the more incentive there is for young talent taking up knife making—thus more work for vendors and sharpeners, etc.
There will always be good, plentiful, cheaper knives available. There will also always be knives that because of price or rarity, be out of reach of most people—as it should be, ...I've put in a lot of time and effort acquiring the knives I have.
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Personally, I tend not to get hung up on money, ...well, I do and I don't. With primary market buying, yeah, I often shop around for the the best price from trusted vendors, get excited about 20% sales. However, on the secondary market I either buy because of a bargain, or pay a high price for something I really want but is otherwise near impossible to find.
Admittedly, I've paid $100 over on BST retail rather than wait for vendors to restock; I've also a pile of knives (about 2k worth) for an $800 knife I wanted, ...reason was being too lazy to post on BST, and it was to a very nice seller who would give some of the knives to local chefs. Secondary market create its own logic.
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In the grand scheme of things, kitchen knives is a relatively cheap form of collecting—compared to art, cameras, and other stuff I'm into. Thank god I'm not into guns, folding knives, watches, cars, etc.