Having the arrows on the sides will need to be done using CSS so you will need to write some custom css to place the arrows there.
Right now we do not have any default css for the navigation at the side, only at the bottom.
For the product currency symbol they are using Woocommerce.
To change your shop currency settings go to: WooCommerce > Settings > General > Currency Options and select your desired currency from the Currency drop down.
I just found that there are two product price blocks, one from woocommerce, which was the one I had added, and another from Toolset. I changed to the one from toolset and the pound sign now shows. I find it very confusing when you have multiple blocks for the same thing!