From time to time The Ferret may promote discount codes that give a discount from the normal subscription price. 

If you have a discount code, you should use it in the pop-up check-out after you have chosen a membership plan on this page: 

If the discount code does not work, then it may have expired or exceeded the maximum number of times it can be used. 

If the discount code did not work but you think it should, get in touch and we'll investigate.