Flat Fee. Where a legal matter is simple and well-defined, lawyers typically charge a flat fee. Examples of flat fee matters include wills, uncontested divorces and simple bankruptcy filings. If an attorney suggests or has advertised a flat fee, be sure you understand exactly what that fee will and will not cover.
The definition of wily is  something or someone who is cunning and sly. An example of wily is a bank robber whose picture never gets caught on a surveillance camera.
Synonyms: shrewd, sagacious, astute, perspicacious These adjectives mean having or showing keen awareness, sound judgment, and often resourcefulness, especially in practical matters. Shrewd suggests a sharp intelligence, hardheadedness, and often an intuitive grasp of practical considerations: He was too shrewd to go along with them upon a road which could lead only to their overthrow (J.A. Froude).