2014 is my first year as a certified fertilizer applicator and I am starting to plan ways to quote it. I know that for most work you do a quote = material x mark-up + labor + any other costs. So my questions are: What is a reasonable mark-up on fertilizer? My labor ranges from $35 for leaves to $60 for mowing. What should I use for fertilizer? (It's pretty simple, but I guess the opportunity cost is mowing hours) What is the minimum I would need to buy to get a bulk price? I figure once I know my labor and material charge I figure that I could just calculate each quote on a per 1000sq ft basis. If there is another thread on this lemme know. Thanks for the help.