Let us know what your goal is.
My primary goal is to bring attention to standards in hopes that some of this will rub off.
If I learn here about how they are made, that would be nice but may make the topic too broad.
My bringing up issues is intended to point out things that could possibly be solved.
I guess the market price will always be what it can bear.
A few of main issues that come to mind with the lights are:
1. Non-standard lamp base type (A blade type may be best)
2. Poor connections (A good socket would help)
3. Dipped light colorant will flake off. (Colored glass would help)
4. I think LEDs that emit the color instead of using colored lenses look better
Of course, having standards may help, that does not prevent the manufacture of making look alikes, but it is a start.
For example, take molex connectors (something I personally would like to see go away). I believe
the standard calls for them to be #18 wire. I have seen them a low as #24. I used some of them to power a
graphics card and they burned out. A wonder they did not start a fire.
Best Wishes