Ladies and gentlemen, may I present a contender for the Guinness Book of World Records title for the cheapest business sign in the world.
Get your business name out there with absolutely no cost. Just wait for the truck to get dirty as it goes about its daily business. I estimate that a trip around the metro during rush hour would do it. After you have a good layer of dirt and soot, take a piece of cloth (clean or dirty, doesn't matter) and start lettering. Wait, we might incur some cost with a piece of cloth, scratch that. Just take your finger, give it a good lick and start writing. You might have to re-lick that finger every now and then to keep it moist, feel free to use your other digits.
I say give Home Best Enterprises Furniture a perfect score on cost effectiveness and just forget about the other categories.