I doubt your prices are too high. Maybe you need to get into a better "class" of show? I didn't sell didly when I went to craft shows that had dish towels with a crocheted loop on the top to hang it off your oven door. (At the show I went to that had those, I saw lots of dish towels that had cows on them. I've referred to those kinds of shows as "cow towel shows" ever since.)Well the sale was a bust. I sold 3 things on Saturday, only one Sunday. Not worth the effort to go. Let alone booth rent. But I learned some things and set up my booth and took it down. At least my friend went with me.
At places with items priced in my price range, I did much better.
I also knew a weaver who had a show in two different towns and said he did MUCH better in Kalamazoo, compared to Grand Rapids (both in Michigan). I asked him why, since GR is a much bigger town. He said that GR was "too Dutch."
I saw a lot of that (people not willing to pay for quality hand made items) with my stuff.
I never quibble over price with someone who has made something. If I can't afford it, too bad for me. I will not ask them to lower their price.