mini cart don't work

hi,
I don't know if it's a bug or an error from me (but I didn't change anything in this view) but mini cart module don't display correct prices in products with characteristics (only in these ones). Price multiplies two times units: if product price is 10€ and quantity is 10 units, mini cart display total price 1000€ and not 100€. But checkout cart displays all prices right.
Another question: when hikashop create invoice from an order, all prices display with taxes. I put the option yes in "detailed tax display" and I'd like to show unit price, price, subtotal, shipping without taxes as checkout cart. Wich view and what have I to change?
The same thing for mini cart: Wich view and what have I to change to display prices without taxes?
As always, thanks for your work and apologies for my extra work.

hi,
I know I can change it in configuration, but I put it to show both prices in products (with and without taxes) and chekout cart display prices only without taxes (except final total). I want to display prices in mini cart as in checkout cart, I mean without taxes. I Know I have to edit some view file but I don't know wich file and what I have to change in it. please, some help with this (I have no idea of php).
I wanted to report a possible bug: when I was creating my shop, I copied the last created product and changed all what I must to change (images, text, prices, etc). I put six different prices in each product (depending on customer group and quantities). each time I copied a product, the order of prices changed: first display third, second display fith, and so on; and the same thing happened with characteristics. I hope this can be useful for you.
Thanks for your help in advance.

You are right. The problem was I selected to display prices without taxes in module cart and displayed it with taxes; if I set it to display prices with taxes, then cart displays prices without taxes, and I think I did not change anything (??????).
The other question about invoices. I was looking for it but I don't know where I have to change the way of showing prices without taxes in invoices (except final total).
About ordering changing after a copy, it's not too important. I finished the production of my shop and published it, and I said you just for your information (if you want to pay attention to this), but throughout the production it hapenned many times. If I can, I love to help everybody and over all if this people are you, that help me many times.
thank you for all.

I edited product and checkout listing_ price view to display prices without taxes before prices with taxes and you said to me I have to do the following:

In the listing_price view file, you will have to swap the line:
echo $this->currencyHelper->format(@$price->price_value_with_tax,$price->price_currency_id);

and the line:
echo $this->currencyHelper->format($price->price_value,$price->price_currency_id);

and change the line:
echo JText::_('PRICE_AFTER_TAX');

with:
echo ' with taxes)';

Could be this the problem or not? As I already said, I have no idea of php, and I don't change anything if you don't say to me (at least, consciously)