Fence Estimator

I want to start my own landscaping business Fencing / and I want to know how to estimate the material cost?

I perfected the cost of labor and I'm stuck on the cost, or how to understand the cost of materials.

I understand that I can multiply the base material, I'm gone. But how a professional appraiser account for land issues, equipment? and is it better for me to workload only. and leave the shopping is the customer?

I did some research on this and other similar business ideas for months and I almost saved enough money to be licensed and bonded. and I have my own tools.

Please, I am only looking for people who have a fence and landscaping business or planes.
or if you have any sites about?

I used to fence with my Da and has always found it easier to let the client but the materials and he would just charge for labor and machinery. It would even collect the materials closing if there is a charge nescesary but also his time.