Three bids, three lifespans, one price gap. The shingle manufacturer sets most of the rules that decide whether a roof lasts, and almost nobody reads them.
A regional distributor pulled its ecommerce platform contract apart before the renewal date and found that the clauses that mattered most were the ones added in the last decade.
Delays in a linked sale rarely come from one slow party. They come from four or five structural dependencies, and the waiting has a monthly price you can calculate.