To carry on from Doug's post.
If you're planning to go injection moulding, then the physical mould build costs will usually set you back anywhere between £15k - £30k, depending on complexity.
Injection moulding is a high volume manufacturing technique as the mould costs need to be offset against that volume.
For example if you're doing a run of 1000 units, and the mould cost you £30k then the mould cost alone is £30/unit. This ignores physical moulding costs (usually £1 - £4 again depending on part size and complexity)
Anything is possible, but cost is always a factor
IM gives your the most flexibility with design, but is the most expensive set up for design and production, but lower end costs for manufacture.
There are smaller volume techniques, for example we use laser cutting for some of our smaller volume products - https://www.modmypi.com/raspberry-pi/ca ... nt-b-plus/
- however, there is a limit to design complexity given your building products out of 2d planar objects. I can't envisage creating 12-pack of beer from this! The material/manufacturing costs are also much higher than IM.
Or 3D printing enables more flexibility with design for smaller runs. But it's usually devoted to prototyping due to high per part cost. There's also longevity issues with the the materials used in high end printing (SLS for example), and quality issues with low end production which use layered plastic.
There's no real middle ground unfortunately - the 250 - 1500 range is bang in the middle of protoyping >> full product range.