Mr. X is 6ft. 4 in tall. It's hard to find a ready made pair of shoes for him. Ms. Y doesn't like run-of-the-mill jewelry. She wants something unique. What do they do?
The answer lies in 'Custom Design'. 'Custom Design' refers to uniquely development services; be it the client company's website or ones home furniture, shoes, jewelry etc. to reflect his organizational or individual needs and tastes and preferences.
Companies who undertake 'Custom Design' generally have many years of expertise and provide an outstanding service. The cost in this case is not fixed as in the case of mass produced. The costs can really vary depending on client's particular needs. Usual practice is to quote a price after making an evaluation of the client's need.