You are probably looking at several programs ranging in price from $750.00 to $6000.00.
Programs towards the lower end of this price range will likely easy to learn at first but due to their history as consumer products they tend to become limiting very quickly and will not provide the ability to complete highly detailed working drawings.
Most of the programs towards the upper end of this price range are going to allow you to complete working drawings, but will lack ease of use.
SoftPlan is and always has been targeted to the professional user and is the only program that combines an easy to use interface with the ability to complete highly detailed working drawings, 3D renderings and material take offs.
SoftPlan does not charge annual maintenance or support fees.