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

For a .ie domain:

Once your .ie domain expires it is suspended 41 days later and completely purged 70 days later making it available for anyone to register.