Your car or truck is nothing but some chunks of steel and bits of rubber and plastic. The raw material costs aren't what you're buying - You're buying the expertise of one of the best wide-body aluminum extrusion companies in the US, one of the few plastic extrusion companies left that will willingly do dual-durometer plastic extrusions, and our support, knowledge, and backing on every one of the products that we design and sell. These tools are literally designed and meant to last you a lifetime of use. If price is the only objection, use a 2x4 or a piece of angle-iron as an edge guide. We also offer a custom DIY kit that consists of a 5lb chunk of aluminum bar stock, two small sandwich bags of plastic pellets, and a blank saw adapter plate for a very reasonable price.