Minor layout issues

Thank you for creating the plugin Marketpress. I love the intuitive way to use your plugin. Despite that, I am experiencing some challenges. Hope you can help me solving them.

MENU: I want to delete the option 'products' in the sub-menu of 'mybunjee webshop'. In which file should I do that?

PRICE: At present the price is shown as: Price: from € 9.00. I want to have it show as: Price: € 9.00. In which file should I remove the word "from"?

PRODUCT PAGE: in Safari the 'button 'Choose Option' is a different size than the button 'Add To Cart" (see bottom of the product page). In the Dutch version, this is not the case. In Firefox neither. How can I solve this?

Thank you!