The cost of starting a skateboard shop will vary depending on the size and location of the shop. A small skateboard shop in a town with a population of less than 10,000 people may cost as little as $3,000 to start. This includes the cost of inventory, signage, and rent for a small retail space. A larger skateboard shop in a city with a population of more than 100,000 people may cost as much as $50,000 to start. This includes the cost of inventory, signage, marketing, and rent for a larger retail space. The most important factor in determining the start-up costs for a skateboard shop is the location. A prime location in a high foot traffic area will be significantly more expensive than a less desirable location.