Cross-browser testing can be one of the biggest time/money sinks during the QA phase of a web-app release. $326 may not make sense for a small company, but medium to large companies will spend much more than that on manual cross browser testing. A 4 person QA team, assuming average costs (salary, benefits, taxes, office space, hardware, etc...) of $100/hour (which I think is low) burns through $3,200/day. $326 is a drop in the bucket.