Man I really wish I could accommodate that.
Looking at this like as a product design engineering consultant (I am) a job shop (I am) and a contract CNC programmer, the cost to properly develop the untested design in CAD was about $8,000. Programming, setup and fixturing will probably be close to 20K to set up for production for all of the different parts. Add engineering changes due to design tweaks after testing and validation and the cost to put these into production in a shop with normal burdened overhead is probably 30-40K (we're pretty lean, a shop like Spiderco or Benchmade is probably double that for a new pattern). Divided by 100 folders is $350 amortized expenses. Plus material, carbide, spindle time, heat treat, finishing, assembly, tuning and final profit margin and they're going to be pretty expensive.
Now, a left handed variation might cost half of that to set up. And we make ten of them. It ends up being a $4,000 custom folder. That isn't a good value and a person would be better served having a custom maker build them something using manufacturing processes better suited to very low volumes.
I'm sorry, but I can't offer a fair value using the manufacturing processes we're going to employ in those volumes, and I don't want to get into mixing our processes either (I'm already chronically overwhelmed trying to juggle things here). I really wish I could do this for you but I'm simply not up to it.