User blog comment:SpyTec/Purschase locations/@comment-12138097-20150419182151/@comment-26009169-20150419212105

Even if it would be static I'd only suggest keeping a few systems that contain a majority of the ships and modules. Just because we can't list as many as we can possibly put on here, there's around 27k systems iirc and even more stations.

With changing stock I think it's dependant on influence, wealth, state and government, as the system I'm trading in atm haven't changed it outfitting for a month or more.

Although an app would be nice, I don't think an app specificly made for purchase locations would be doable with user-input. The people who use the list seem to be in the minority and the data would quickly be outdated I'd imagine.