Lead or coloured pencil as well as pastel drawings are often made available by artists and are a great way to own examples of work by your favourite artist.
They are generally less expensive unless offered as exquisite finished artwork that can be the product of many hours work.
Like watercolour paintings, they need extra care when handling. The drawing can easily be spoiled and care is needed not to smudge the drawing surface. Drawings are delicate and the use of protective glass in a frame is essential, together with acid free framing materials.