All the .stl files are available on Tinkercad. Search for Full Assembly 150mm Offset BinoscopeIts Public and freely availabke
Approximate cost breakdown:
1) Two 6" F5 Mirrors from Agenaastro ~$290
2) Upper 28 mm secondary ~$15
3) Lower 55mm secondary ~ $25
4) Aluminum frame ~ $35
5) General hardware: Vinyl light covers, velvet sheets, glue, nuts&bolts, 3D filament, etc, ~$45
6)Two 32mm Plossl eyepieces $60
Total cost of Ultra Light (5Kg) 150mm Binoscope ~$470
Approximate cost breakdown:
1) Two 6" F5 Mirrors from Agenaastro ~$290
2) Upper 28 mm secondary ~$15
3) Lower 55mm secondary ~ $25
4) Aluminum frame ~ $35
5) General hardware: Vinyl light covers, velvet sheets, glue, nuts&bolts, 3D filament, etc, ~$45
6)Two 32mm Plossl eyepieces $60
Total cost of Ultra Light (5Kg) 150mm Binoscope ~$470