Net worth bug with items value

There is a bug in net worth calculation with items value, the way that i've noticed that is after doing trades. here is a full scenario:

- let's say a seller add items to a trade with total value 19 mil
- then i added my price which was an 18.5 mil 
- now, the logical thing to happen here is my items net worth should be up by 19 mil, and whatever method that  i was use to storing my money should be down by 18.5 mil and then my total net worth should be up by 1.5 mil

but .. what happened is another thing, here 3 examples after doing trades:

 1- 

[image: media.discordapp.net]

2 - 

[image: media.discordapp.net]

3- 

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The last one might be confusing due to fact i did 2 trades that day, plus i can confirm the 3 trades with the items value if needed. 

What bothers me specifically is when i sold all the gained items again, i lose all the "extra numbers that are above my trades profits", which seems to me like unreal net worth right now?!

P.S: IT'S NOT A BUG WITH TORNTOOLS, I'VE CHECKED MY NET WORTH STATISTICS IN " PERSONAL STATS" AND IT MATCHES THE NUMBERS LIKE THE ABOVE SCENARIOS 

The networth of a single item is different from your purchase price, or the market value. The exact value of an item for networth calculation is not visible.