That is a nice bit of reverse engineering. Would there be a market for those if you sold them independently, or are the likely hassles not worth it ?
I doubt its worth the aggro, companies like Hill engineering with their own cnc machine can bosh them out at a profit for £25 each (the stainless material cost is £8 or so) but as I have to subcontract the cnc work it means the actual cost to me even on a large run ends up at ~£20 a pop.
If there was somewhere that did cnc time by the hour and I could provide the materials, probably a tidy profit there but likewise a lot of aggro for not much profit.