For a .com, .net, .org etc:
The following image depicts the lifetime of a .com .net or .org domain (Click to enlarge)
Once a domain enters the ‘Redemption Period’ it will cost more to renew it. Enom’s redemption charge is $250 + 1 year of renewal
This is why it is important to pay invoices on or before their due date.
For a .ie domain:
Once your .ie domain expires it is suspended 41 days after its expiry date and completely purged 70 days later making it available for anyone to register.