I do…. There’ll be numerous product design companies who can knock up your drawings
Approach a few (don’t discuss the idea)
Get an NDA in place
Employ the one you want
Plenty of 3D printers can do batches at reasonable prices
Alternatively, depends on the mould and projected numbers…. The higher the number of casts the more expensive the tool will be…. If you’re not certain choose a cheaper tool…
As for making it…. You can go east or stay local…. They’ll break down costs dependant on volumes…. Ensure you’ve get the sales to justify any volumes
Any IP here? You may want to protect first before going further?
Good luck, the world needs people to innovate, so you have my respect!