Well maybe we'll gain productivity if they get to work instead of wasting time!

If you're new to a team, best thing you can do to learn a new codebase, is to reply to loads of support questions coming around, you'll have to dig in to understand how it works and reply to the questions. Same when there is a bug, try to find it, then work out a solution and ask your co-woker what he thinks about it. Also, a good test to see if you know your codebase is getting a call from your boss and be able to fix the bug over the phone when he explains it to you.

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Actually if you are thinking about high-end server, the few % you get with optimized calls, can be translated in $ with several digits. So if you paid someone less than that number, everybody wins.