If you need to temporarily disable the 'cart' features of your shop, you can edit styles.css.liquid (under Assets) from the code editor by adding some CSS to the very bottom of the file.
To hide all of the prices in your shop, you can paste the following snippet:
.price, .current_price, .modal_price {
display: none !important;
}
To hide all of the 'Add to Cart' buttons in your shop, you can paste:
#add-to-cart, .add_to_cart {
display: none !important;
}
To hide the cart and checkout links and icons in your shop, you can paste:
.cart, .checkout, .cart-button, .icon-cart {
display: none !important;
}
When you're ready to re-enable the cart or show prices again, simply reopen styles.scss.liquid and delete the line or lines you added.