Generally speaking yes, but there are some exceptions.

For example, flashlights intended to be attached to a firearm DO incur a premium for a good reason. They’re subjected to intense sudden movement and vibration, repeatedly, and it takes a lot of extra hardening and redundancy to develop a light that can repeatedly withstand that kind of abuse without eventually knocking core components loose. If you were to try to attach a tactical light intended for airsoft/bb use to a real firearm, its not going to last long. There’s a reason gun lights are as expensive as they are.