Ask for the cost of additional printouts of pattern pieces or markers. The cost benefits come from the accuracy and efficiency of a computer. Fabric is usually the most costly portion of a garment. Computer made markers can optimize fabric utilization. This information is useful for accurate costing.
Markers are consistent, and they can be stored on disk for future use.
Patterns can be easily altered once in the system. New styles can be created from the existing patterns. This is less costly then having to start fresh. If markers are computer cut, the accuracy continues. The sewing process is more efficient and the finished garment is a higher quality.