As opposed to regular messenger services, these delivery services charge based on the size of the package, so that weight and distance are no longer primary considerations.
宅配通和傳統郵局不同之處，還在於它是以「體積」為運費的計價標準，打破了「重量」和「距離」的區隔，譬如包裹長寬高總和在六十公分以下、重量不超過二十公斤的物品，費用一律在一百元左右。