Product_seller
$meta_query = array( 'relation' => 'AND', array( 'key' => 'product_prices', 'value' => '$product_id', 'compare' => 'IN', ), array( 'key' => 'product_seller', 'value' => '$website_id', 'compare' => '=', ), );
$meta_query = array( 'relation' => 'AND', array( 'key' => 'product_prices', 'value' => '$product_id', 'compare' => 'IN', ), array( 'key' => 'product_seller', 'value' => '$website_id', 'compare' => '=', ), );