That's where knife shows come in.

If you're a customer, or one in need of a knife, seeing a guy sitting at a $500.00 table, spending $150.00 a night for a hotel room and traveling 500+ miles to even get to the show, you will have a bit of respect and elevated understanding of WHO this guy is and what his knives look and feel like.
You'll be able to share ideas and ask him face to face questions about his knife making philosophy.
Now, when you go back home and see one of his knives "for sale" on a forum such as this for $700.00 and another similar knife for the same price from a guy you have only seen on the
WWW..., whose knife are you going to buy?
That is your "comparison point".