Perch Shop display all prices for product

Hi,

I would like to display all currency prices for a product, rather than just the currently active one. This is part of generating a CSV from Perch. I currently have:

<perch:shop id="price" type="shop_currency_value"/>

Which is showing the default price which is GBP. I would also like to show the price in EUR and USD. I have tried:

<perch:shop id="price.gbp" type="shop_currency_value"/>
<perch:shop id="price.eur" type="shop_currency_value"/>
<perch:shop id="price.usd" type="shop_currency_value"/>

As I have used these id's as part of a sort before, but this doesn't work. I can't see the other currency values in showall anywhere. If you have any advice that would be great.

Thanks

Mike