Making jigs and testing fitment costs time and money. Thats how product development is. If I am just going to make one of something, the cost will reflect that. If I can sell multiple, the cost will reflect that. There is a reason your iphone is $1000, not the $15,000,000 it took to design all the code and systems behind it.
Shit, I am three weeks into testing an intercooler system for the Altima turbo. Probably $3000 in labor and testing into it. I have a target sales number, and my price reflects that target.