按件计算 meaning in Chinese

by the piece
piece rate

All you have to do to enjoy our premium service is to open an account . it s totally free - you simply pay for
客户只须预先开户，即可使用特快服务，开户费用全免，速递收费则按件计算。
Our translation prices depend on the language combination and the urgency , our normal translation rate is about 2000 4000 source words
1000字计算，超过1000字，按实际字数计算小件翻译，按件计算