Actually that's not too bad for your Great design,
If you factor How many pieces are in a kit?
There looks to be 14 in just the pivot section.
That not factoring the pieces that mount them to the bed,
Maybe 8 more pieces?
Even at 14 pieces =$8.57 each.
If it is 22 pieces that's just $5.45 each.
Just food for Thought.
Great Idea.
Maybe if you get enough orders it can push the price down.
The Question I would ask them is:
How many sets can you cut out of a 4x8 sheet of metal?
Hope this helps
.