The estimated delivery gives you an indication of how long it will take to receive the item. It's based on the seller's dispatch time, the transit time for the delivery service(s) offered, the type of payment used, and your location. In certain cases, the estimated delivery time will vary.
The estimated delivery is given in working days (normal weekdays). Dispatch times don't include Saturdays, Sundays and major holidays. Transit times don't include major holidays and Sundays, but may include Saturdays, depending on the delivery service provider. For example, transit times for Royal Mail services include Monday to Saturday (exception: RM Special Delivery services include Monday to Friday).
Sellers are required to specify how long they will take to package and post the item after receiving cleared payment. Sellers may select a dispatch time between 1 to 30 working days.
Some delivery services provide an estimate for number of working days that it will take to deliver the item to the buyer. This transit time does not include the seller's dispatch time.
A payment is considered 'cleared' after the money from the buyer has been deposited into the seller's account. If the buyer pays by PayPal, the payment may clear immediately. However if the buyer pays by cheque or money order, it may take several days.