i have a nice place literally 5 mins from me, they arent the cheapest but are local and now that they know me as the kid with the right toys, they will cut deals and wont charge for minor cuts and such. i also went in when i first got a welder and told them i just bought a welder, and asked if there were any scraps i could have for very cheap or free. they said take what you want, and come back for more. i literally can now walk in and hit the drop shelf like i work there.
as for transporting 20ft sticks, if its only one or two smaller sized things i just throw them on my roof rack, or if im in my beater/landscaping truck it has a ladder rack