Does anyone know why companies like Benchmade and Spyderco charge so much extra for G-10? Obviously G-10 is probably the most preferred handle material overall but when you see so many companies making knives with G-10 with decent steel for well under $50 and some even closer to $25, it just doesn't sit well with me. I'm so sick of seeing cheap plastic handles for $100+.
"G-10", if the handle material really is G-10, is epoxy glass laminate.
If made correctly, it's reasonably expensive material.
But you could call a lot of materials, "G-10". Some are more expensive to process than others, depending on the specific epoxy resin being used. And proper processing is essential for good properties. It's possible to get a poor material, and technically speaking, you could still call it "G-10".
Also a purely flat sheet of G-10 is not that expensive, a 3-dimensional shape is pricey, because it must be machined.
G-10 type materials as initially made are glossy and not grippy. Modifying the surface to provide a grippy surface increases cost.
And if you taking care of your workers, air filters are required during cutting and machining operations because the glass fibers are bad for the lungs. Filtering systems are expensive and add to the manufacturing cost.
So saying that the handles on a knife are "G-10" still leaves a vast amount of room for differences in cost and performance.