Help budgeting

For those that have started building this contraption, any thoughts on the rough budget? I’d love to get one of these built over the summer, but need to watch my budget along with a couple other projects I’m doing. Looking at $350 for parts from the story, $150 for the Dewalt router, $100 in plywood and lumber. What else? I need to 3d print the parts and the cost of the spools, but I’m counting that as a minimal expense.

Is $700 a reasonable budget for this?

Sounds about right.