- I use this plugin and find it useful.
Plugin name: KiCost
Description: KiCost is intended to be run as a script for generating part-cost spreadsheets for circuit boards developed with KiCad. It also supports bill of material files from other EDAs which is useful for older projects and it can even handle hand-made CSV files. Additionally, KiCost comes with a graphical user interface in addition to the command line.
Developers page: https://github.com/xesscorp/KiCost/
Most recent discussion: BOM from Eschema
Developers head: @devbisme, @hildogjr