The cost depends upon the type and amount of material used in the part.
Perhaps make thinner walls, and add gussets at stress points.
Complexity is not very important, so things like a thin wall
with ribs for strength can save money.
One of our members used http://www.shapeways.com
" onclick="window.open(this.href);return false; recently
to make the "cage" (enclosure) for his CANary project.
Subject: The CANary project
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle