Hi,
Open
VM Backend >> Configuration >> Pricing
and enable only these pricing options:
Attachment ScreenShot2013-12-09at11.12.03AM.png not found
Then open any product and override the price like this:
Attachment Pasted_Image_12_9_13__11_12_AM-17_2013-12-09.png not found
Then you will have this look in the website:
Attachment ScreenShot2013-12-09at11.14.46AM.png not found
BUT!! This won't work if you don't have a TAX Rule in your website. This is a common problem in the Virtuemart.
If you don't add any TAX to your product, still create a TAX rule for all products. But type 0% TAX, basically you will keep not adding any TAX for any product, but it will do the trick.
Attachment Pasted_Image_12_9_13__11_16_AM-7_2013-12-09.png not found
Regards.
Support.