Changing Labels for "Quantity" and "Price" information generated via MarketPress

Hi,

I understand that I can use labels for the shortcode [mp_product_price] for example : [mp_product_price label="some other language" ]

But if i were to create the product using MarketPress, at the end of the product post there will be a "Quantity" and "Price" information automatically generated.

May I know how do i change the label for these?