Products Quotation Markup

Products Quotation Markup

We are creating proposals for our customers.  So our numbers change each project, but the "Products" are the same on each proposal (installation, Product, Etc.).  I want my sales team to generate a quotation, plug in a "Cost" and have Zoho markup that cost automatically.  I DO NOT want to create a new product for each project.   

I see there is a "List Price" and I can enter that.  However, I need to enter a cost and have Zoho Markup the price to a specified %.  Is this possible?  Currently we are getting a number from estimating for the installation and calculating the markup manually to enter in Zoho.  Not the end of the world, but seems this calculation should be automatic.