There are several skateboard producers. Some are expensive and some are inexpensive. I would never recommend someone go to a discount store for any sport or safety equipment. They generally are not well made, and cause more harm than good. However, when it comes to cheap equipment you are bargaining with a child s safety.
Skateboards have three basic parts.
The deck is the bandaid-shaped piece of wood. Generally there will be a gripping surface on part of the board. Do not expect this to be sufficient. Always make sure your children have on shoes with non-slip soles. Decks are usually 30-36 long, and shorter is better for the beginning skater.