Virtue Mart recalculate price bug

[dmonco]

Hi.
I work along with VM but see this kind of bug at first time. Have thoughts that it can be even trojan or maybe some new settings of VM 2.0.8?
Here is an example:
http://fashioninline.fi/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=35&virtuemart_category_id=1678&Itemid=777
If you look carefully to a block with prices you will see that first price was Myyntihinta: 104,55 €
But then somehow this price doubled: Myyntihinta: 209,10 €

I tryed to make an audit with Google Chrome, and found this strange link
option=com_virtuemart&nosef=1&view=productdetails&task=recalculate&format=json& .... etc.
Something creates this links and creates json file which double my price.

Any thoughts how to turn it off or to find this javascript file to remove it?

[dmonco]

I found the file which doubles my price but it's native file.
Here it is components/com_virtuemart/assets/js/vmprices.js
Now I think somebody enabled something in admin and I can't find it. Any thoughts?

P.S.
My VM settings:
In product description - override is disabled.
In Prices and taxes config all rules are disabled.

[Milbo]

You add with your size instant 85 euro. Create a zero option

[dmonco]

Thank you. You are right.