How to display releated products have near price using view

I made one view on my site for your requirements. I have drupal 7, ubercart 2.10, views 3, views_php modules

My view creates a block.

The view is

$view = new view;
$view->name = 'related_products';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'node';
$view->human_name = 'Related products';
$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'] = 'Related products';
$handler->display->display_options['access']['type'] = 'none';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['query']['options']['query_comment'] = FALSE;
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'some';
$handler->display->display_options['pager']['options']['items_per_page'] = '5';
$handler->display->display_options['style_plugin'] = 'table';
/* Field: Content: Title */
$handler->display->display_options['fields']['title']['id'] = 'title';
$handler->display->display_options['fields']['title']['table'] = 'node';
$handler->display->display_options['fields']['title']['field'] = 'title';
$handler->display->display_options['fields']['title']['label'] = '';
$handler->display->display_options['fields']['title']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['title']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['title']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = 0;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = 0;
$handler->display->display_options['fields']['title']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['title']['alter']['trim'] = 0;
$handler->display->display_options['fields']['title']['alter']['html'] = 0;
$handler->display->display_options['fields']['title']['hide_empty'] = 0;
$handler->display->display_options['fields']['title']['empty_zero'] = 0;
$handler->display->display_options['fields']['title']['link_to_node'] = 1;
/* Field: Product: Sell price */
$handler->display->display_options['fields']['sell_price']['id'] = 'sell_price';
$handler->display->display_options['fields']['sell_price']['table'] = 'uc_products';
$handler->display->display_options['fields']['sell_price']['field'] = 'sell_price';
$handler->display->display_options['fields']['sell_price']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['external'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['sell_price']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['sell_price']['alter']['more_link'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['trim'] = 0;
$handler->display->display_options['fields']['sell_price']['alter']['html'] = 0;
$handler->display->display_options['fields']['sell_price']['element_label_colon'] = 1;
$handler->display->display_options['fields']['sell_price']['element_default_classes'] = 1;
$handler->display->display_options['fields']['sell_price']['hide_empty'] = 0;
$handler->display->display_options['fields']['sell_price']['empty_zero'] = 0;
$handler->display->display_options['fields']['sell_price']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['sell_price']['set_precision'] = 0;
$handler->display->display_options['fields']['sell_price']['precision'] = '0';
$handler->display->display_options['fields']['sell_price']['format_plural'] = 0;
/* 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' => 'product',
);
/* Filter criterion: Global: PHP */
$handler->display->display_options['filters']['php']['id'] = 'php';
$handler->display->display_options['filters']['php']['table'] = 'views';
$handler->display->display_options['filters']['php']['field'] = 'php';
$handler->display->display_options['filters']['php']['use_php_setup'] = 0;
$handler->display->display_options['filters']['php']['php_filter'] = '$nid = arg(1);
$node = node_load($nid);
$price = $node->sell_price;
if($price == ($row->sell_price -1) || $price == (($row->sell_price +1) ))
return false;
else
return true;';

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

You need to configure the block and add a php filter for show on which page and add code as

$nid = arg(1);
if (!$nid)
return false;
$node = node_load($nid);
if($node->type == 'product')
return true;
else
 return false;

so that you will be shown the block only on the product pages

You can import the above view code on your site once you have required modules installed, configure the block and assign it to a region and your task is done.

Hth,
Sadashiv.