The price for full installation of a shelving system in your van or trailer interior will vary depending on the style of installation (DIY vs Professional) and the material you use (wood vs metal). Enclosed trailer shelving ideas can cost anywhere from a few hundred dollars to thousands - make sure you know what your budget is for this project and your own skill-level. Professional installation will be costly, but it is more likely to last longer, provide more customization options, and give your van or enclosed trailer an overall more professional look!