Item tracking through purchases and sales

[Ionaru]

Is your feature request related to a problem? Please describe.
I want to track my item purchases and sales to calculate how much profit I've made. This is currently not possible in Google Sheets because it requires keeping track of items in a storage system.

Describe the solution you'd like
A system that tracks item purchases and item sales, it needs to store these items in a "warehouse". From these purchases and sales (+tax) a profit % should be calculated.

Describe alternatives you've considered
None.

Additional context

That I'd be able to select items for the system to track, and then have it automatically watch the transactions (maybe requiring a manual pull, but to automatically interpret the new transactions) to keep track of inventory changes, and per unit value of items. So if I buy 10 isogen one day at 25isk and 10 the next day at 35 isk, it would see that I have 20 isogen work 30isk pu.

Handling descrepencies where volume changes with no transactions could just be recognized with a dialogue and ask how the user wants to treat it, like if new minerals show up, ask if they want to add them at the current jita buy price, or a different price