This script lists and totals the Cost for each part in an assembly based on the value found in File Properties > Part Data > Cost Center. It currently includes hidden or suppressed items but it ignores values in the assembly and sub-assemblies file properties to eliminate duplication. Note: Use at your own risk. This script uses undocumented and unsupported features of AlibreScript. Be extremely careful with modifications. V2 released 11/18/2019 fixes incorrectly adding subtotals and makes printing for large assemblies nearly instant.
V2 released 11/18/2019 fixes incorrectly adding subtotals and makes printing for large assemblies nearly instant. Thanks @idslk for catching that. My apologies to anyone who used it. Please download the new version.
Unfortunately it is not yet. I've yet to see if such a thing is possible. However I'm working on a Assembly Matrix with guidance from Lew and that will create it's own separate spreadsheet BOM.