 Kelsey Coleman with the Better Business Bureau says they will drop off a pamphlet, tell you they have extra supplies, and since they're working on your neighbor's driveway, they'll offer a discount. They just need either a very large percentage or a full upfront fee to get started. But Coleman says once you pay it, the contractor may not show up or do shoddy work, so research the company, get several job quotes, and everything in writing.