If your stuff is nice and it appeals to potential customers then the cheap competition should not be a worry, we attend a monthly craft market in Lincoln once a month and I sell my jewellery boxes for a minimum of £220, I have sold one every month this year and also produced another three on commission, my tuned boxes sell for a minimum of £24 and we have been at other craft fairs where we have been adjacent to other turners who are selling cheaper but we always do better.
I really do think that where wood crafts are involved that quality and craftsmanship sell, if the next stall is selling what you regard as rubbish cheaply, don't moan, just big-up your quality and the workmanship that has produced such a beautiful item, they have eyes.
There are plenty of people out there that turn for a hobby and do not wish to make any profit for whatever reason, perhaps they are not confident their stuff will fetch a good price, perhaps they are not skillful enough, perhaps they are giving the money to charity, if your stuff is of a high enough standard then what's the problem.
We also all do the same thing, which tools do you use? Sorby or Addis? which lathe do you have? cheap or pricey? it all boils down to what you can afford and what you like, same as people selling cheap stuff, not everybody can afford the expensive turnings but those who can will buy it if they like it.
That's my pennyworth anyway.
Andy