Refine 3d model

I have an art-focused 3D model ready to go and need it printed in PLA at the highest resolution you can achieve. The finished piece should showcase fine details with a smooth, almost injection-mould quality surface—no obvious layer lines when it’s on display... (Budget: $30 - $250 CAD, Jobs: 3D Design, 3D Modelling, 3D Print Design, 3D Rendering)