This is not dishonesty, CutShot. I don't doubt that this cuemaker had anticipated selling his product, once available, for $200. Based on your post, it would appear orders were not being accepted prior to the production of the cue. Had orders been accepted and not filled at the agreed to price, that would be dirty pool, but this doesn't appear to be the case.
My guess is that one of the following happened: a) production costs were greater than anticipated, and this compelled the cuemaker to sell for more, b) after production, the cuemaker thought highly enough of the cue he had produced that he liked his chances of getting good sales at a higher price than the one originally intended, or c) early sales were so encouraging that the price was raised. In all three of these situations, the cuemaker's actions are about supply and demand.
To me, the only thing this cuemaker is guilty of is a lousy prediction.