Sure it does, especially since many times checks aren't actually sent to a clearinghouse, but scanned and turned into ACH transactions. They're just as easy to counterfeit (you can order checks with any account and routing number you want from Vistaprint online, or print your own at home) and sometimes just as easy to reverse. A cleared paper check that was never converted requires a bank's intervention to reverse, but it's still possible.

You want to show up with cash, not a check.