I've had very good experiences with knife makers even when the knives haven't exactly worked out. I'm willing to play a little loose with specs in the sub-$150 range because most of the time I'm going to like the blade, and if I don't all the knife makers have been very good about returning my money with no hard feelings...
I won't mention any names but here's how my last few deals went...
I saw a knife maker's page on the web and liked his style, so I emailed, called and talked. We discussed specs and a price. I gave the go-ahead. The knife that arrived some months later was a beautiful knife, but not at all what I ordered. I went over this with the knife maker and sent him a copy of the original email containing the specifications. He agreed that he erred, and cheerfully refunded my money. Of course I sent him back his knife.
I ordered a second knife from another knife maker who said he would be able to meet my specification. I haven't seen the knife yet, but I've seen pictures of the work in progress, and it looks really good. In the mean-time, a third knife maker who saw my specifications said he had something in stock that might meet my requirements. I looked at a picture on his web site which appeared promissing, so I sent him a check and received the knife. Again, a beautiful knife, but it did not really meet the spec for reasons you couldn't see in the picture. I sent him back the knife, and he sent me a refund, no problem.
Bottom line here is that sometimes, for one reason or another, maker and buyer mis-communicate. I've not experienced any hard feelings from these knife makers when asked for a refund, and I understand both have since sold the knives to others so there hasn't been any problem either way.