Hi fresky, your original issue of the image not importing is new to me. This has worked in the past and has seen no major change in recent releases. I’ll reproduce this and resolve this promptly, can you please confirm what e-Commerce platform you are using.
Regarding the Price column requirement this is required by WP e-Commerce to create new Products (Price must be a positive amount) and may have spilled over to Jigoshop and WooCommerce, if so I’ll remove this. When merging Products Price should not be required which I will adjust accordingly.