Orders over $300?

They say they need some kind of verification for orders over $300. What exactly are they looking for? Are they looking for verification of your identification to make sure it's you and the order is real or are they looking for verification of your research? What if someone's research on rats is top secret for important organizations and they don't want to release that infomation?

Do most people keep their orders under $300 or is this not an issue?

Thanks.

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