Currency is not showing correctly

[edudflog]

I'm sure there is a simple fix for my problem but I've been through all of the settings and I cannot find the right one.

I have set the currency to $ (USD) under the currency configuration.  It is the only currency published.  When I move to the product module, under Product pricing, I enter the cost price in USD, but the module converts the base price, the final price and overides to Euros with a euro symbol hard coded (see the image).  I only want USD to appear.  Is the problem in the currency conversion file?  Being new to this, I just can't figure it out. 

Any help that can be provided would be greatly appreciated.

Thanks

[attachment cleanup by admin]

[jenkinhill]

In shop/vendor/currency make sure that the default is dollar and that List of accepted currencies is only dollar. Also ensure that the store address uder Additional Information is set to US.  Also disable the Joomla module, Module VirtueMart Currency Selector