I am little bit pessimistic here - my approach to appraisal will not come from automatic appraisal, but when I am thinking how much I can get for name, I think about how large is a pool of end users, and what are the alternatives they can get so they do not need to pay me a premium (profit) for my name..
datasecurity is basically 2 keyworder and because of that, there are lot of alternatives for it in new gTLD name space. At the time of writing, for example following domains are available for reg fee:
datasecurity / company, datasecurity / website, datasecurity / care, datasecurity / media, datasecurity / center
It is clear that they are not the same as datasecurity / online, but I think that chances of end user NEEDING exactly datasecurity / online so much that they will pay premium to domainer holding it, is pretty low.
So it can be low XXXX, but I guestimate probabilty of resale for this price is 0,5% for any given year, which does not make it a profitable investment, imo.