My last business , I ran 1 ton Sprinter Service Vans loaded . with drivers time , my cost running diesel , a tad over $2.00 per mile . Sold the business August 1, 2018. I'm sure with inflation my cost today would be $3.00 + per mile. Your cost , is real , Tags, Taxes, Insurance, Diesel, Food on Road, Tires, Oil Changes, Your Time , Etc , Etc, Etc. You have to add it to your Fish retail cost , or you have to charge realistic Mileage , one or the other. The driving gets old , if your not making decent wages while doing it. Hope it's very enjoyable, I'm looking forward to purchasing Fish on a regular basis.