Hi Scott,

At the bottom is a simplistic related items block that selects 3 items with the same taxonomy term. If this will work for you then edit it to use a vocabulary and view mode that exist on your site and you should be good.

If it won't then what target types do you have in the entity reference field? Do you have 'Product display'?

=============================

$view = new view();
$view->name = 'related_items';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'node';
$view->human_name = 'Related items';
$view->core = 7;
$view->api_version = '3.0';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Master */
$handler = $view->new_display('default', 'Master', 'default');
$handler->display->display_options['title'] = 'You may also love';
$handler->display->display_options['css_class'] = 'view-display-products';
$handler->display->display_options['use_more_always'] = FALSE;
$handler->display->display_options['access']['type'] = 'perm';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'some';
$handler->display->display_options['pager']['options']['items_per_page'] = '3';
$handler->display->display_options['style_plugin'] = 'list';
$handler->display->display_options['style_options']['row_class_special'] = FALSE;
$handler->display->display_options['style_options']['class'] = 'all-products';
$handler->display->display_options['row_plugin'] = 'fields';
/* Field: Content: Rendered Content */
$handler->display->display_options['fields']['rendered_entity']['id'] = 'rendered_entity';
$handler->display->display_options['fields']['rendered_entity']['table'] = 'views_entity_node';
$handler->display->display_options['fields']['rendered_entity']['field'] = 'rendered_entity';
$handler->display->display_options['fields']['rendered_entity']['label'] = '';
$handler->display->display_options['fields']['rendered_entity']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['rendered_entity']['element_default_classes'] = FALSE;
$handler->display->display_options['fields']['rendered_entity']['link_to_entity'] = 1;
$handler->display->display_options['fields']['rendered_entity']['display'] = 'view';
$handler->display->display_options['fields']['rendered_entity']['view_mode'] = 'product_list';
$handler->display->display_options['fields']['rendered_entity']['bypass_access'] = 0;
/* Contextual filter: Content: Nid */
$handler->display->display_options['arguments']['nid']['id'] = 'nid';
$handler->display->display_options['arguments']['nid']['table'] = 'node';
$handler->display->display_options['arguments']['nid']['field'] = 'nid';
$handler->display->display_options['arguments']['nid']['default_action'] = 'default';
$handler->display->display_options['arguments']['nid']['default_argument_type'] = 'node';
$handler->display->display_options['arguments']['nid']['summary']['number_of_records'] = '0';
$handler->display->display_options['arguments']['nid']['summary']['format'] = 'default_summary';
$handler->display->display_options['arguments']['nid']['summary_options']['items_per_page'] = '25';
$handler->display->display_options['arguments']['nid']['not'] = TRUE;
/* Contextual filter: Content: Has taxonomy term ID (with depth) */
$handler->display->display_options['arguments']['term_node_tid_depth']['id'] = 'term_node_tid_depth';
$handler->display->display_options['arguments']['term_node_tid_depth']['table'] = 'node';
$handler->display->display_options['arguments']['term_node_tid_depth']['field'] = 'term_node_tid_depth';
$handler->display->display_options['arguments']['term_node_tid_depth']['default_action'] = 'default';
$handler->display->display_options['arguments']['term_node_tid_depth']['default_argument_type'] = 'taxonomy_tid';
$handler->display->display_options['arguments']['term_node_tid_depth']['default_argument_options']['term_page'] = FALSE;
$handler->display->display_options['arguments']['term_node_tid_depth']['default_argument_options']['node'] = TRUE;
$handler->display->display_options['arguments']['term_node_tid_depth']['default_argument_options']['limit'] = TRUE;
$handler->display->display_options['arguments']['term_node_tid_depth']['default_argument_options']['vocabularies'] = array(
'collections' => 'collections',
);
$handler->display->display_options['arguments']['term_node_tid_depth']['summary']['number_of_records'] = '0';
$handler->display->display_options['arguments']['term_node_tid_depth']['summary']['format'] = 'default_summary';
$handler->display->display_options['arguments']['term_node_tid_depth']['summary_options']['items_per_page'] = '25';
$handler->display->display_options['arguments']['term_node_tid_depth']['specify_validation'] = TRUE;
$handler->display->display_options['arguments']['term_node_tid_depth']['depth'] = '0';
$handler->display->display_options['arguments']['term_node_tid_depth']['break_phrase'] = TRUE;
/* Filter criterion: Content: Published */
$handler->display->display_options['filters']['status']['id'] = 'status';
$handler->display->display_options['filters']['status']['table'] = 'node';
$handler->display->display_options['filters']['status']['field'] = 'status';
$handler->display->display_options['filters']['status']['value'] = 1;
$handler->display->display_options['filters']['status']['group'] = 1;
$handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;
/* Filter criterion: Content: Type */
$handler->display->display_options['filters']['type']['id'] = 'type';
$handler->display->display_options['filters']['type']['table'] = 'node';
$handler->display->display_options['filters']['type']['field'] = 'type';
$handler->display->display_options['filters']['type']['value'] = array(
'product_display' => 'product_display',
);

/* Display: Block */
$handler = $view->new_display('block', 'Block', 'block');