I think the best way to get the assistance you are looking for, post an example of a knife you would be interested in. Then someone can probably recommend a less-expensive custom or a quality factory knife in the same style.
One thing to consider, many famous knife makers have contracts with knife companies who make production versions of their knife designs. Maybe few people can afford to buy a handmade Ken Onion, Bob Terzoula, or Van Hoy knife. But almost anyone can afford to buy the Kershaw, Camillus, or Columbia River knives based on their designs.
For now, I don't want to spend more than $150.00. I have seen some customs that were $2000 and up. I have seen some knives that a maker isn’t going to make again, or I keep hearing about years long waiting lists. I went to a knife show in Denver last year, asking about simple knives for use. All the makers that were there only wanted to make fancy knives, seemed to only want to use ivory and fancy fittings for an art piece to sit in a case. They didn’t leave me feeling that they cared about the regular joe off the street that didn’t want to spend thousands.
That's a portion of the market for sure, art knives. You're paying for the exotic materials, one-of-a-kind detailed artwork, and the maker's name and reputation.
But there are many, many handmade custom or semi-custom knives available for $150. Check out the
For Sale by Maker forum section, as others mentioned. Plenty of fantastic knives sell there for $150 and less. You have to keep an eagle-eye on the forum posts though, and be ready to jump when something interests you; the best bargains sell within hours or minutes.
Second, check out the higher-end factory brands. Canal Street, Bark River, Schatt and Morgan, etc.
Third, check out Anza Knives. They'll sell you one of their standard models as-is, modify it to suit you, or design a completely original knife to your specs. Very reasonable prices and friendly communication.
I hope you find what you're looking for!