Hi all, I'm looking into a flex rigid PCB configuration for our next design. We currently have a 4 layer PCB about 40mm x 60mm, and looking to split it into 2 rigid PCBs with a flex between. The current PCB + assembly costs about $2 at volume. Anyone have any experience what I could expect to be the cost increase, if all other things (component number, type, etc) are kept equal? Are we talking 20%, 50%, 100% range numbers? Thanks in advance!