If you want an honest opinion, I don't think you are quite ready to sell knives. Your handle work is pretty good, your designs are appealing, But your metal work is not there yet. On your filework, measure! Make sure your file cuts are uniform in spacing and depth. Spend some time making smaller knives till you are comfortable doing a Flat or hollow grind.
I hope you don't mind me being honest. If you had come here and said, here are some knives I made, I would have said good work keep at it. But you are asking about value on your work and you would be ill served by me blowing bubbles up your hiney.
I gave away the first 20 knives I made. I would have been embarrassed to ask someone to pay for them, and I never made a single one of them with the thought that I could sell them. The honest truth is I didn't start selling knives until people started seeing my knives and saying, "I want that, How much?" I am still my worst critic and consider my work amateurish. (and it is) I'll stay that way, as that is the fastest way for me to improve.
My first knife sell was to someone I took a knife that I had made for myself just to show it to him. He took it, lookad at it and said, "I want it, How much?"
I stood there dumbfounded for a minute,
Finally I stammered out "I made it for myself"
"but how much would you sell it for?" was his reply.
I threw out a number I was sure would dissuade him
"I put alot of work into it, I would probably ask 200.00 for that knife."
I expected at that point he would hand it back to me.
he took out his wallet handed me 2 one hundred dollar bills and said "it's mine."
later that day he called and asked if I would make him another one for his dad. I've been busy ever since.
I hope you get the point to my story, It isn't to toot my horn, but to show perhaps a good way to discover that your work has gained some value in other peoples eyes.
Here is the knife he bought, my first from elk horn and one of my first tries at filework. I'm still a little embarrassed that I sold it, but he loves it.
Hope this helps you.
Ricky