For their objectives, that was undoubtedly a good return on investment. Even ignoring the ROI, the absolute cost seems quite reasonable given the feature set and target market. Someone picked a good CHS or did a good job with avoiding scope creep.

While I applaud them for their understanding and use of technology, it is a strange feeling to see the FBI start to think like the NSA. Given the positive PR of this approach+result other teams will most assuredly try to replicate it