It depends on how much you want to pay. If you can do a good job yourself, I would. Your time is free; theirs will be very expensive.
For future reference, just hire a photographer who does this stuff. Unless you have VERY few guys, this is probably going to cost more than having it done all at once. Die-cutting mats is ridic expensive, and if you're talking 30 guys, that's 30 separate holes they have to cut.
If you don't want to pay the big companies, see a local photographer. He/she will also be able to do this and hopefully give you a deal. But use a professional, not a guy who fancies himself a photographer.
If you're pretty handy with software, you might try this
http://www.micro-art.com/ And then maybe you can justify re-shooting the pictures with a decent background.
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