For this kind of budget, we've regularly built works-like-looks-like prototypes of fairly complex consumer hardware devices. For example, we built World's best

For this kind of budget, we've regularly built works-like-looks-like prototypes of fairly complex consumer hardware devices. For example, we built World's best FPV video goggles for roughly this budget (with custom optics design and prototyping). That's our internal project, though. After building a prototype, you would typically need another 2x to 3x that for tooling (if plastics are involved) and some working capital to manufacture the first volume run of 100 - 1000 units. Hardware is rather expensive.