As a side note, 1 ISK seems to widely be regarded, Eden-side, as a LOT of money.
Are you sure that cigarette pack might not be more like .05 ISK? That's still gignormous by K-space standards.
A note on Aria and the local data net:
Aria's personal system is a slightly less polite guest than she is, herself. Specifically, it's a nasty high-end professional hacker's tool kit (greatly mitigated by the lack of an Anathema or similar hacking frigate). In game terms, she's got a head full of hacking implants. This is the closest thing Aria normally carries to a weapon.
While the expert systems she's got running are likely to stage an automatic and disproportionate retaliation against, for example, advertising systems trying to circumvent her content preferences (+10 virus coherence bonus ftw!), their main function planetside is to seek and sift through tidbits of local data for patterns that might interest their owner. The focus is on stuff that you're not likely to find in a tourist brochure: socioeconomic and political trends, what's "hot" on the local black market (if any), topics or persons of special concern to local authorities and population, and so on.
They don't hack anything they can't basically just lift the lid on and look inside (unless provoked or given orders to do so), but they cast a broad net and they're avid fisher-- uh, programs. Aria will be idly reviewing things they come up with as she explores (a bit like listening to the radio as you walk).