Complex sentence: Similar devices from the Harris Corporation, like the stingray phone tracker, have been sold around the same time, since 2008; their airborne mounting kit for cell phone surveillance have been said to cost $9,000.
Split into simpler sentences: Similar devices from the Harris Corporation, like the stingray phone tracker, have been sold around the same time. Since 2008 their airborne mounting kit for cell phone surveillance have been said to cost $9,000.