Agencies Sign Vendor Quotes Every Week. Most Never Audit Them. Here's a margin-killer nobody talks about: your agency doesn't lose money on the work. It loses money on the quotes it signs — subcontractor quotes, tool contracts, white-label services — with vague terms that quietly eat 10-30% of the project margin. The client pays you a fixed price. You pay vendors on their terms. Every trap in their quote comes straight out of your profit. Why agencies get hit hardest A fre...