Unfortunately us "bobbies on the ground" don't set the agenda for what is/isn't dealt with, thats set my high up management, who haven't been out on the street in years, and are so far removed from what policing actually involves they are clueless.
They set the policies, but it is who have to tell the poor disgruntled "customers" that no, we can't look into their ebay crime for them, as it doesn't fulfil our criteria. Or no, if you've had some kind of fraud involving your bank card and the bank has refunded you, then no, we don't investigate it.
And I hate to say it, but my experience with the Met Police has not been great, and thats me as an officer trying to get them to take on crimes that have happened in their force area but reported to us. They don't want to know, and I also happen to know they are not at all interested in ebay crimes (know this from trying to pass some over).
Honestly, the hoops we have to jump through and paperwork we have to do to find anything out from anyone is ridiculous. Its not just data protection, there is other legislation as well. And did you know, for example, that we (the police) are often charged for information, particularly from mobile phone companies. So again, that can have a bearing on how a crime is investigated, as at the end of the day, rightly or wronly, everything boils down to money.