You see what we see. Transparency is integral to The BF Way, particularly in our pricing. We'll show you every invoice of project costs if you wish to review, just be aware (or beware ;>) this will be hundreds of pages, but you're paying the bills so you're entitled to see them.
You pay what we pay plus a margin that covers your project costs (e.g. research, logistics, management, etc.) and a contribution to our company profit. Schedule of Values is also known as progress billing, "open book" or cost-plus. Bottom line, unless someone works for free or invents a new and better way, project pricing cannot be any more transparent. You're billed, review all invoices and pay as work progresses. We shepherd so you stay within budget. Change orders should be an exception, and only for upgrades or additions not included in the original scope.