Realised gains don’t calculate from average buy price from an item.
If I buy 10 cases at 1 euro
Then I buy 10 at at 2 euro
Then buy 10 at 3 euro
And finally sell 10 cases at 3 euro, it will say I have profited 20 euros. Even though my average buy price was 2 euros, and so profit should be 10 euros.
Instead it takes information from my first ever purchase and calculates the profit from that purchase alone.
This is very misleading and frustrating.