If you look hard enough, you’ll likely find plenty of examples of players manipulating the EVE Central data for their own nefarious purposes. With that in mind, I began investigating using the CREST API for the market data I use in the loss reports.
What I found is that the data provided by the CREST API is only aggregated at the region level rather than the system level. This means that I can not accurately provide profit data for those wishing to use different buy and sell systems. This may be an unnecessary level of granularity, but it’s one that I highly prefer.
So, although the data in EVE Central may suffer from validity issues, I will continue to rely upon it until CCP increases the granularity of their market API.