These are the general estimates for the different standard postal courier shipping method
UK to UK - 2-3 working days (considered lost after 5)
EU to EU - 5-7 working days (considered lost after 15)
US to US shipping - 4-6 working days (considered lost after 10)
Australia to Australia - 2-5 working days (considered lost after 10)
Australia to New Zealand - 7-10 working days (considered lost after 20)
UK/EU to Canada or US shipping -10-15 working days (considered lost after 28)
UK/EU to Rest of the world - 10-15 working days (considered lost after 28)
Orders shipping via courier usually arrive within 1-6 working days
Shipping times are in addition to production times so you do need to allow for production and shipping times when setting estimates for your customer