I'm bidding on a commercial lawn account and they want five rounds of fertilizer to be done. 1.Preemeregent with fertilizer 2. Liquid preemergent with weed control 3. Liquid fertilizer with weed control 4. Fertilizer with weed control 5. Winter fertilizer I'm not doing the fertilizing because I'm not liscensed, yet! Will be subbing out! I don't have a clue on what the stuff costs or a good charge for putting it down. I look to sub this out until I can gain the knowledge and the liscense to do it. 2.5 acres of grass to be covered. Any help on pricing would be greatly appreciated!