Help Please Re Currency Conversions

Hi everyone, Im new to the site and want to add my first image but it only states US$ - Im from the UK and have opted into all the various FAA sites ie England, Europe etc but is there any way I can price my images in £ sterling as opposed to converting from $ to £ as Im sure i'll end up with images being sold for £14.46 for example rather than £14.50. Im sorry in advance for the noob question but hope someone may be able to help me

thanks in advance for any help you can give