"but the dollar figure is author guesswork" any figure presented would be guesswork. It's impossible to measure how many users left your site because they thoug

"but the dollar figure is author guesswork" any figure presented would be guesswork. It's impossible to measure how many users left your site because they thought it was broken. The estimate provides meaningful context. Without an estimate, this article amounts to complaining about web standards. With an impact estimate, it is actionable. We have a problem, we know roughly how bad it is, we have a solution. Maybe it's off by an order of magnitude or 2. If it's costing them $44k/year, it's still worth fixing.