Tin whistle
In recent years a number of instrument builders have started lines of "high-end," hand-made whistles, which can cost hundreds of dollars US each — expensive in comparison to cheap whistles, but nevertheless cheaper than most other instruments. These companies are typically either a single individual or a very small group of craftsmen who work closely together. The instruments are distinguished from the inexpensive whistles in that each whistle is individually manufactured and "voiced" by a skilled person rather than made in a factory.
Tin whistle
The standard range of the whistle is two octaves. For a D whistle, this includes notes from D to D; that is, from the second D above middle C to the fourth D above middle C. It is possible to make sounds above this range, by blowing with sufficient force, but, in most musical contexts, the result will be loud and out of tune due to a cylindrical bore.