Is it worth it?

Lately I've been intrested in buying some older sets that are already retired since none of the newer sets were released in my country. I've found some used sets that picked my intrest but im not sure if i should buy any of them. Lloyd's golden dragon for 600R$ (115 USD or 60 USD if i was to use Lego's usual conversion because the sets are much more expensive than just converting the original price :p) Spinjitsu Dojo for 575R$ (110,21 USD) Lloyd dragon mech for 550R$ (105 USD) Fangpyre...