I would recommend going down the custom post route, for the time it takes its totlly worth it, plus it keeps things nice and tidy in the backend.
I would recomend using this plugin to add meta boxes to custom post types http://plugins.elliotcondon.com/advanced-custom-fields/
You will still need to set up the custom post type, stick this in your functions.php
//ADDING CUSTOM POST TYPE 'PRODUCT'
function products_int(){
$labels = array(
'name' => _x('Products, 'post type general name'),
'singular_name' => _x('Product', 'post type singular name'),
'add_new' => _x('Add New', 'Product'),
'add_new_item' => __('Add New Product'),
'edit_item' => __('Edit Product'),
'new_item' => __('New Product'),
'view_item' => __('View Product'),
'search_items' => __('Search for Products'),
'not_found' => __('No products found'),
'not_found_in_trash' => __('No products found in Trash'),
'parent_item_colon' => ''
);
$args = array(
'labels' => $labels,
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'query_var' => true,
'rewrite' => true,
'capability_type' => 'post',
'hierarchical' => false,
'menu_position' => 4,
'supports' => array('title','editor','thumbnail'),
'taxonomies' => array('category')
);
register_post_type('product',$args);
}
//CUSTOM POST TYPE
add_action('init', 'products_int');
Thats it pretty much