Man you guys love shooting down others comments with statements that actually have 0 backing information or intelligence behind them.lololol the plastic isn't $15 dollars for like a minecraft character -_-
A spool of plastic wire costs roughly $25 for ~2.2Lbs or 1Kg
Depending on the dimensions, hollow or solid, height, thickness of wire, etc depends on how much it will cost.
So unless you plan on making a half inch by half inch model, and painting them using your microscopic paint brushes with minimal movement errors, ya, it's gonna cost a pretty penny to make. Stop assuming and maybe do 30sec of research.
